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Pfsense with LAN adresse that is not set by GUI/Setup

Scheduled Pinned Locked Moved General pfSense Questions
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  • P
    p0ker
    last edited by Nov 5, 2012, 5:08 AM

    Correct… on the switch, same port as the the pfsense box.

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    • P
      phil.davis
      last edited by Nov 5, 2012, 5:52 AM

      It seems a coincidence that your LAN IP is 10.0.1.1/25 and that the "25" in the netmask happens to pop up at the end of 10.0.1.25 also.
      You could see if 10.0.1.25 is mentioned anywhere in your config - either use Diagnostics, Edit File end bring up /cf/conf/config.xml (or wherever yours is), or from the command line:
      grep 10.0.1.25 /cf/conf/config.xml

      As the Greek philosopher Isosceles used to say, "There are 3 sides to every triangle."
      If I helped you, then help someone else - buy someone a gift from the INF catalog http://secure.inf.org/gifts/usd/

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      • C
        cmb
        last edited by Nov 5, 2012, 6:08 AM

        Are you bridging some other NIC to LAN and have that .25 IP on it (or it's set to DHCP)? Something very close to the same MAC would almost always be two built-in NICs in the same system, and bridging would be the only way you could have two MACs from the same system on a single switch port.

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        • P
          p0ker
          last edited by Nov 5, 2012, 7:21 AM

          @phil.davis:

          It seems a coincidence that your LAN IP is 10.0.1.1/25 and that the "25" in the netmask happens to pop up at the end of 10.0.1.25 also.
          You could see if 10.0.1.25 is mentioned anywhere in your config - either use Diagnostics, Edit File end bring up /cf/conf/config.xml (or wherever yours is), or from the command line:
          grep 10.0.1.25 /cf/conf/config.xml

          Good trick.. (I'll put a note in my pfsense cheat-sheet).. but no luck… There is no entry in the config of 10.0.1.25

          @cmb:

          Are you bridging some other NIC to LAN and have that .25 IP on it (or it's set to DHCP)? Something very close to the same MAC would almost always be two built-in NICs in the same system, and bridging would be the only way you could have two MACs from the same system on a single switch port.

          Also a valid explanation, but as far as I know, there should be no bridging on this pfsense box. If I had some kind of bridging setup, wouldn't I see that in ifconfig?? And btw, the .25 is outside of the DHCP range… Anywhere else I could check?

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          • P
            p0ker
            last edited by Nov 9, 2012, 10:46 AM

            Not giving up here… did some ICMP ping testing with tcpdump on pfsense box..
            The test against 10.0.1.1, looks normal, you can see both request and reply, but for the 10.0.1.25
            You can only see the request....

            [2.0.1-RELEASE][root@pfsense.local]/root(42): tcpdump -ibce2 -vv -n | grep ICMP
            tcpdump: listening on bce2, link-type EN10MB (Ethernet), capture size 96 bytes
            11:41:38.963495 IP (tos 0x0, ttl 64, id 43294, offset 0, flags [none], proto ICMP (1), length 84)
                10.0.1.10 > 10.0.1.1: ICMP echo request, id 54649, seq 0, length 64
            11:41:38.963510 IP (tos 0x0, ttl 64, id 58355, offset 0, flags [none], proto ICMP (1), length 84)
                10.0.1.1 > 10.0.1.10: ICMP echo reply, id 54649, seq 0, length 64
            11:41:39.955940 IP (tos 0x0, ttl 64, id 43297, offset 0, flags [none], proto ICMP (1), length 84)
                10.0.1.10 > 10.0.1.1: ICMP echo request, id 54649, seq 1, length 64
            11:41:39.955956 IP (tos 0x0, ttl 64, id 4144, offset 0, flags [none], proto ICMP (1), length 84)
                10.0.1.1 > 10.0.1.10: ICMP echo reply, id 54649, seq 1, length 64
            11:41:40.948931 IP (tos 0x0, ttl 64, id 43299, offset 0, flags [none], proto ICMP (1), length 84)
                10.0.1.10 > 10.0.1.1: ICMP echo request, id 54649, seq 2, length 64
            11:41:40.948947 IP (tos 0x0, ttl 64, id 52480, offset 0, flags [none], proto ICMP (1), length 84)
                10.0.1.1 > 10.0.1.10: ICMP echo reply, id 54649, seq 2, length 64
            11:41:40.949827 IP (tos 0x0, ttl 64, id 43303, offset 0, flags [none], proto ICMP (1), length 84)
                10.0.1.10 > 10.0.1.25: ICMP echo request, id 54905, seq 0, length 64
            11:41:41.942910 IP (tos 0x0, ttl 64, id 43306, offset 0, flags [none], proto ICMP (1), length 84)
                10.0.1.10 > 10.0.1.25: ICMP echo request, id 54905, seq 1, length 64
            11:41:42.935894 IP (tos 0x0, ttl 64, id 43309, offset 0, flags [none], proto ICMP (1), length 84)
                10.0.1.10 > 10.0.1.25: ICMP echo request, id 54905, seq 2, length 64
            
            

            From the test machine:

            PING 10.0.1.1 (10.0.1.1): 56 data bytes
            64 bytes from 10.0.1.1: icmp_seq=0 ttl=64 time=0.055 ms
            64 bytes from 10.0.1.1: icmp_seq=1 ttl=64 time=0.057 ms
            64 bytes from 10.0.1.1: icmp_seq=2 ttl=64 time=0.057 ms
            
            --- 10.0.1.1 ping statistics ---
            3 packets transmitted, 3 packets received, 0.0% packet loss
            round-trip min/avg/max/stddev = 0.055/0.056/0.057/0.001 ms
            
            PING 10.0.1.25 (10.0.1.25): 56 data bytes
            64 bytes from 10.0.1.25: icmp_seq=0 ttl=64 time=0.408 ms
            64 bytes from 10.0.1.25: icmp_seq=1 ttl=64 time=0.387 ms
            64 bytes from 10.0.1.25: icmp_seq=2 ttl=64 time=0.403 ms
            
            --- 10.0.1.25 ping statistics ---
            3 packets transmitted, 3 packets received, 0.0% packet loss
            round-trip min/avg/max/stddev = 0.387/0.399/0.408/0.009 ms
            
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            • J
              johnpoz LAYER 8 Global Moderator
              last edited by Nov 11, 2012, 4:18 PM Nov 11, 2012, 4:11 PM

              Why don't you just look on pfsense??  ifconfig would show you the macs of all the interfaces and what IPs on are them.

              Also the response times of your pings points to something other than pfsense

              so you ping .1 and get .05ms
              when you ping .25 you get .5ms

              This is quite a dif if same machine answering the pings.  .5 ms is clearly lan response times.  .05 would seem to be just pinging itself if you ask me not lan type response times.

              Is pfsense on a VM?

              An intelligent man is sometimes forced to be drunk to spend time with his fools
              If you get confused: Listen to the Music Play
              Please don't Chat/PM me for help, unless mod related
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              • P
                p0ker
                last edited by Nov 11, 2012, 9:05 PM

                @johnpoz:

                Why don't you just look on pfsense??  ifconfig would show you the macs of all the interfaces and what IPs on are them.

                The easiest solution might be the best, but not in this case. If you look at my responds to wallabybob, I listed a set of tools that I've used to check for existent.

                @johnpoz:

                Also the response times of your pings points to something other than pfsense

                so you ping .1 and get .05ms
                when you ping .25 you get .5ms

                This is quite a dif if same machine answering the pings.  .5 ms is clearly lan response times.  .05 would seem to be just pinging itself if you ask me not lan type response times.

                Is pfsense on a VM?

                I agree, it looks like 0.05 would be more like pinging itself, rather then ping another machine on the LAN.. but in fact it's not.. they are all physical machines, no VM.

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                • J
                  johnpoz LAYER 8 Global Moderator
                  last edited by Nov 11, 2012, 11:46 PM Nov 11, 2012, 11:39 PM

                  I don't see how you could be pinging across a switch with different ports and 2 different cables and be getting .055 ms

                  What switch and network cards do you have??? Across a switch your going to see around .5 ms not .05 ms

                  If I ping myself on my linux box I can see under .100 ms, but anything else on the switch and your look at .400 to .600ms.  I just don't buy it that your pinging across a switch and getting .055 ms RTT?

                  So why can you not show us ifconfig off your pfsense box?  Hide any public IPs

                  –[2.1-BETA0][root@pfsense.local.lan]/root(4): ifconfig
                  em0: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
                          options=9b <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum>ether 00:50:56:00:00:02
                          inet 192.168.1.253 netmask 0xffffff00 broadcast 192.168.1.255
                          inet6 fe80::250:56ff:fe00:2%em0 prefixlen 64 scopeid 0x1
                          inet6 2001:470:xx:xx::1 prefixlen 64
                          nd6 options=1 <performnud>media: Ethernet autoselect (1000baseT <full-duplex>)
                          status: active
                  em1: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
                          options=9b <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum>ether 00:50:56:00:00:01
                          inet6 fe80::250:56ff:fe00:1%em1 prefixlen 64 scopeid 0x2
                          inet 24.13.xx.xx netmask 0xfffff800 broadcast 255.255.255.255
                          nd6 options=1 <performnud>media: Ethernet autoselect (1000baseT <full-duplex>)
                          status: active
                  vmx3f0: flags=8802 <broadcast,simplex,multicast>metric 0 mtu 1500
                          options=403bb <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsum,tso4,tso6,vlan_hwtso>ether 00:0c:29:1e:18:90
                          media: Ethernet 10Gbase-T (autoselect)
                          status: no carrier
                  vmx3f1: flags=8802 <broadcast,simplex,multicast>metric 0 mtu 1500
                          options=403bb <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsum,tso4,tso6,vlan_hwtso>ether 00:0c:29:1e:18:9a
                          media: Ethernet 10Gbase-T (autoselect)
                          status: no carrier
                  plip0: flags=8810 <pointopoint,simplex,multicast>metric 0 mtu 1500
                  pflog0: flags=100 <promisc>metric 0 mtu 33200
                  enc0: flags=0<> metric 0 mtu 1536
                  pfsync0: flags=0<> metric 0 mtu 1460
                          syncpeer: 224.0.0.240 maxupd: 128 syncok: 1
                  lo0: flags=8049 <up,loopback,running,multicast>metric 0 mtu 16384
                          options=3 <rxcsum,txcsum>inet 127.0.0.1 netmask 0xff000000
                          inet6 ::1 prefixlen 128
                          inet6 fe80::1%lo0 prefixlen 64 scopeid 0x9
                          nd6 options=3 <performnud,accept_rtadv>ovpns1: flags=8051 <up,pointopoint,running,multicast>metric 0 mtu 1500
                          options=80000 <linkstate>inet6 fe80::250:56ff:fe00:2%ovpns1 prefixlen 64 scopeid 0xb
                          inet 10.0.200.1 –> 10.0.200.2 netmask 0xffffffff
                          nd6 options=3 <performnud,accept_rtadv>Opened by PID 7348
                  gif0: flags=8051 <up,pointopoint,running,multicast>metric 0 mtu 1280
                          tunnel inet 24.13.xx.xx --> 216.66.77.230
                          inet6 fe80::250:56ff:fe00:2%gif0 prefixlen 64 scopeid 0xa
                          inet6 2001:470:xx:xx::2 prefixlen 64
                          nd6 options=3 <performnud,accept_rtadv>options=1 <accept_rev_ethip_ver>This would for FACT Show you want IPs your box could answer on and what MAC address.</accept_rev_ethip_ver></performnud,accept_rtadv></up,pointopoint,running,multicast></performnud,accept_rtadv></linkstate></up,pointopoint,running,multicast></performnud,accept_rtadv></rxcsum,txcsum></up,loopback,running,multicast></promisc></pointopoint,simplex,multicast></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsum,tso4,tso6,vlan_hwtso></broadcast,simplex,multicast></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsum,tso4,tso6,vlan_hwtso></broadcast,simplex,multicast></full-duplex></performnud></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum></up,broadcast,running,simplex,multicast></full-duplex></performnud></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum></up,broadcast,running,simplex,multicast>

                  An intelligent man is sometimes forced to be drunk to spend time with his fools
                  If you get confused: Listen to the Music Play
                  Please don't Chat/PM me for help, unless mod related
                  SG-4860 24.11 | Lab VMs 2.8, 24.11

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                  • P
                    p0ker
                    last edited by Nov 12, 2012, 8:00 AM

                    As I said, it look strange that I wold get a sub 0.0x respond… I did the same test from another machine and got a more "normal" result.
                    So to put this machine out of the loop, I turned it off....

                    If it would be a simpel answer, that the ip and interface would be shown by ifconfig, I would not be asking question on this forum...
                    But here you go, my complete ifconfig.....

                    [2.0.1-RELEASE][root@pfsense.local]/root(1): ifconfig
                    bce0: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
                            options=c00bb <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsu   ="" m,vlan_hwtso,linkstate="">ether 00:10:18:b8:db:b0
                            inet6 fe80::210:18ff:feb8:dbb0%bce0 prefixlen 64 scopeid 0x1
                            inet xxx.xxx.xxx.xxx netmask 0xffffff80 broadcast 255.255.255.255
                            nd6 options=3 <performnud,accept_rtadv>media: Ethernet autoselect (1000baseT <full-duplex>)
                            status: active
                    bce1: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
                            options=c00bb <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsu   ="" m,vlan_hwtso,linkstate="">ether 00:10:18:b8:db:b2
                            inet 172.16.0.1 netmask 0xffffffe0 broadcast 172.16.0.31
                            inet6 fe80::210:18ff:feb8:dbb2%bce1 prefixlen 64 scopeid 0x2
                            nd6 options=3 <performnud,accept_rtadv>media: Ethernet autoselect (1000baseT <full-duplex>)
                            status: active
                    bce2: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
                            options=c00bb <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsu   ="" m,vlan_hwtso,linkstate="">ether bc:30:5b:e5:7b:00
                            inet 10.0.1.1 netmask 0xffffff80 broadcast 10.0.1.127
                            inet6 fe80::be30:5bff:fee5:7b00%bce2 prefixlen 64 scopeid 0x3
                            nd6 options=3 <performnud,accept_rtadv>media: Ethernet autoselect (1000baseT <full-duplex>)
                            status: active
                    bce3: flags=8802 <broadcast,simplex,multicast>metric 0 mtu 1500
                            options=c01bb <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsu   ="" m,tso4,vlan_hwtso,linkstate="">ether bc:30:5b:e5:7b:01
                            media: Ethernet autoselect (none)
                            status: no carrier
                    pflog0: flags=100 <promisc>metric 0 mtu 33664
                    pfsync0: flags=0<> metric 0 mtu 1460
                            syncpeer: 224.0.0.240 maxupd: 128 syncok: 1
                    enc0: flags=0<> metric 0 mtu 1536
                    lo0: flags=8049 <up,loopback,running,multicast>metric 0 mtu 16384
                            options=3 <rxcsum,txcsum>inet 127.0.0.1 netmask 0xff000000
                            inet6 ::1 prefixlen 128
                            inet6 fe80::1%lo0 prefixlen 64 scopeid 0x8
                            nd6 options=3 <performnud,accept_rtadv>ovpns1: flags=8051 <up,pointopoint,running,multicast>metric 0 mtu 1500
                            options=80000 <linkstate>inet6 fe80::210:18ff:feb8:dbb0%ovpns1 prefixlen 64 scopeid 0x9
                            inet 10.10.10.1 --> 10.10.10.2 netmask 0xffffffff
                            nd6 options=3 <performnud,accept_rtadv>Opened by PID 2136</performnud,accept_rtadv></linkstate></up,pointopoint,running,multicast></performnud,accept_rtadv></rxcsum,txcsum></up,loopback,running,multicast></promisc></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsu ></broadcast,simplex,multicast></full-duplex></performnud,accept_rtadv></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsu ></up,broadcast,running,simplex,multicast></full-duplex></performnud,accept_rtadv></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsu ></up,broadcast,running,simplex,multicast></full-duplex></performnud,accept_rtadv></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsu ></up,broadcast,running,simplex,multicast> 
                    
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                    • P
                      p0ker
                      last edited by Nov 12, 2012, 9:06 AM

                      A picture is worth more then 1000 words?

                      If the text on some of the elements is to small, let me know and I'll tell you what it says…
                      I cleared my ARP table on the switch, and then did a mapping on everything it can see...  (happy that there is not much traffic early in the morning..)
                      There is only one switch, so where you find more MACs behind one physical port is because they are on a wireless network. (The AP is on port GE19)

                      pfsense.png
                      pfsense.png_thumb

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                      • J
                        johnpoz LAYER 8 Global Moderator
                        last edited by Nov 12, 2012, 2:12 PM Nov 12, 2012, 2:02 PM

                        So here's the thing - you don't show that MAC, you don't show that IP.  In doing a sniff you see the ping come in - but you don't see it go out.

                        If you DON'T see it go OUT, but you see an answer from the client that sent the ping.  How do you think its pfsense answering?

                        As to .055 ms looking strange??  How about impossible?

                        Add -e to your tcpdump so we can see mac, you sure you don't have some sort of mirror/span port setup on your switch?  As to why pfsense to would see those packets, but clearly it did not answer them.  And even if it did - how would it be possible it did in .055 ms, when you ping its normal IP its take .500 ms??

                        So yeah that is really really odd - so that is a dual port nic, is it possible there is some sort of load balancing/teaming going on where it created a VIP and mac and freebsd just can not show this because of lack of software from broadcom?  Is this .25 in your dhcp scope?

                        An intelligent man is sometimes forced to be drunk to spend time with his fools
                        If you get confused: Listen to the Music Play
                        Please don't Chat/PM me for help, unless mod related
                        SG-4860 24.11 | Lab VMs 2.8, 24.11

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                        • P
                          p0ker
                          last edited by Nov 12, 2012, 2:35 PM

                          @johnpoz:

                          As to .055 ms looking strange??  How about impossible?

                          Let's forget this one for now (the machine that I got the result from is turned off, and should be out of the loop).
                          We might take this behavior up on another tread if your up for it… :)

                          Guess I'm no hard core tcpdumper.. I see that I should have used the -e earlier... but here are the results..

                          
                          [2.0.1-RELEASE][root@pfsense.local]/root(3): tcpdump -ibce2 -vv -n -e | grep ICMP
                          tcpdump: listening on bce2, link-type EN10MB (Ethernet), capture size 96 bytes
                          15:22:23.352700 c8:2a:14:36:3b:26 > bc:30:5b:e5:7b:02, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 47054, offset 0, flags [none], proto ICMP (1), length 84)
                              10.0.1.9 > 10.0.1.25: ICMP echo request, id 45884, seq 32, length 64
                          15:22:24.353708 c8:2a:14:36:3b:26 > bc:30:5b:e5:7b:02, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 15857, offset 0, flags [none], proto ICMP (1), length 84)
                              10.0.1.9 > 10.0.1.25: ICMP echo request, id 45884, seq 33, length 64
                          15:22:25.354754 c8:2a:14:36:3b:26 > bc:30:5b:e5:7b:02, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 12483, offset 0, flags [none], proto ICMP (1), length 84)
                              10.0.1.9 > 10.0.1.25: ICMP echo request, id 45884, seq 34, length 64
                          15:22:26.356435 c8:2a:14:36:3b:26 > bc:30:5b:e5:7b:02, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 65454, offset 0, flags [none], proto ICMP (1), length 84)
                              10.0.1.9 > 10.0.1.25: ICMP echo request, id 45884, seq 35, length 64
                          

                          Regarding span/mirror, I thought of setting up when I got the switch, but never got around to configure it. Checked right now STP was enable but not in use, disables it now, no differance.. othere places I've checked..

                          Port and VLAN Mirroring - None
                          Link Aggregation - None
                          STP Status & Global Settings - Disabled

                          @johnpoz:

                          So yeah that is really really odd - so that is a dual port nic, is it possible there is some sort of load balancing/teaming going on where it created a VIP and mac and freebsd just can not show this because of lack of software from broadcom?  Is this .25 in your dhcp scope?

                          I have no idea… .25 is outside of my DHCP scope.. that's all I know.. and I did run some load balancing software (varnish/mod_security ++ other 3rd party extension) but they have all been removed... the only one I have left, is a export for OpenVPN clients..

                          Open for suggestions...

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                          • J
                            johnpoz LAYER 8 Global Moderator
                            last edited by Nov 12, 2012, 4:37 PM

                            So can understand why you see the request..  if your switch shows that :02 mac on the port bce2 is connected too.  But clearly its not sending out a reply.

                            But your saying 10.0.1.9 is seeing the response?  And on .9 do a tcpdump, it shows the response coming from that :02 mac?  Then why did you not see it on your pfsense dump??

                            Very very strange issue yes - but if pfsense is sending out the bce2 port – shouldn't you see it via the tcpdump??

                            An intelligent man is sometimes forced to be drunk to spend time with his fools
                            If you get confused: Listen to the Music Play
                            Please don't Chat/PM me for help, unless mod related
                            SG-4860 24.11 | Lab VMs 2.8, 24.11

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                            • P
                              p0ker
                              last edited by Nov 12, 2012, 5:23 PM

                              Never though of check the respond, just did… and yes I do get the respond from the :2 MAC...
                              How'ever I do get a bad chsum on all the request.....

                              Mac-mini:~ root# tcpdump -ien0 -vv -n -e | grep ICMP
                              tcpdump: listening on en0, link-type EN10MB (Ethernet), capture size 65535 bytes
                              18:17:43.480336 c8:2a:14:36:3b:26 > bc:30:5b:e5:7b:02, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 34074, offset 0, flags [none], proto ICMP (1), length 84, bad cksum 0 (->df6d)!)
                                  10.0.1.9 > 10.0.1.25: ICMP echo request, id 3901, seq 6, length 64
                              18:17:43.480737 bc:30:5b:e5:7b:02 > c8:2a:14:36:3b:26, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 47612, offset 0, flags [none], proto ICMP (1), length 84)
                                  10.0.1.25 > 10.0.1.9: ICMP echo reply, id 3901, seq 6, length 64
                              18:17:44.481574 c8:2a:14:36:3b:26 > bc:30:5b:e5:7b:02, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 55579, offset 0, flags [none], proto ICMP (1), length 84, bad cksum 0 (->8b6c)!)
                                  10.0.1.9 > 10.0.1.25: ICMP echo request, id 3901, seq 7, length 64
                              18:17:44.481982 bc:30:5b:e5:7b:02 > c8:2a:14:36:3b:26, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 47613, offset 0, flags [none], proto ICMP (1), length 84)
                                  10.0.1.25 > 10.0.1.9: ICMP echo reply, id 3901, seq 7, length 64
                              18:17:45.482753 c8:2a:14:36:3b:26 > bc:30:5b:e5:7b:02, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 21348, offset 0, flags [none], proto ICMP (1), length 84, bad cksum 0 (->1124)!)
                                  10.0.1.9 > 10.0.1.25: ICMP echo request, id 3901, seq 8, length 64
                              18:17:45.483179 bc:30:5b:e5:7b:02 > c8:2a:14:36:3b:26, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 47614, offset 0, flags [none], proto ICMP (1), length 84)
                                  10.0.1.25 > 10.0.1.9: ICMP echo reply, id 3901, seq 8, length 64
                              

                              And yeah. I do agree, my thinking would also say that if the pfsense is answering it should show it on the tcpdump…

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                              • J
                                johnpoz LAYER 8 Global Moderator
                                last edited by Nov 12, 2012, 7:01 PM

                                very very odd - only thing I can think of is card is putting it on the wire directly from a virtual mac that is outside the OS.  Where it is getting the IP is strange as well - unless you had set it on the card at some point with some broadcom software or firmware you can access on the card.

                                What is the specific model number of the card - is there a way to flush is firmware settings?

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                                • W
                                  wallabybob
                                  last edited by Nov 12, 2012, 7:25 PM

                                  @p0ker:

                                  How'ever I do get a bad chsum on all the request…..

                                  If the software is using the hardware to generate IP checksums on transmit then tcpdump won't necessarily see a correct IP checksum on the transmit frames.

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                                  • J
                                    johnpoz LAYER 8 Global Moderator
                                    last edited by Nov 12, 2012, 7:31 PM

                                    talking this over with a couple of guys here, and they have never seen such a thing but agree it must be something on the card itself with load balance virtual mac.  But have never seen the cards without OS interaction respond to ping, etc.

                                    My only experience with these cards has been using the suite from broadcom in windows to setup the virtual mac for load balance or failover.  But I would guess once this is set it would be in the nvram of the card and not require OS integration if the driver now being used does not have the full feature set, etc.  Wouldn't think you could give it a IP though??

                                    Can you access the cards firmware via bios on the card during post?  If we can get the exact model number of the card with could lookup the documentation, etc.

                                    An intelligent man is sometimes forced to be drunk to spend time with his fools
                                    If you get confused: Listen to the Music Play
                                    Please don't Chat/PM me for help, unless mod related
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                                    • P
                                      p0ker
                                      last edited by Nov 12, 2012, 7:40 PM

                                      @johnpoz:

                                      very very odd - only thing I can think of is card is putting it on the wire directly from a virtual mac that is outside the OS.  Where it is getting the IP is strange as well - unless you had set it on the card at some point with some broadcom software or firmware you can access on the card.

                                      What is the specific model number of the card - is there a way to flush is firmware settings?

                                      U might be spot on! This is a Dell PowerEdge R200, and if I'm not mistaking it has some kind of "remote management" (not Drac, but BMC? )
                                      As this is a remote location, I can not confirm this for a while, but I'm confident that this must be the case… There is NO other good solution, and this is really plausible...

                                      Kinda feel a bit stupid right now....but a big thanks goes out to all the contributors. :)

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                                      • C
                                        chpalmer
                                        last edited by Nov 12, 2012, 7:45 PM

                                        Whats the IP of the wirless access point?

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                                        • P
                                          p0ker
                                          last edited by Nov 12, 2012, 7:47 PM

                                          10.0.1.5, but if you look at my last post I think this issue can be set to resolved… (for now at least..)

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