Pfsense with LAN adresse that is not set by GUI/Setup
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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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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)
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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?
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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 - DisabledSo 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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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??
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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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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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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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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.
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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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Whats the IP of the wirless access point?
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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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Yep- just found my glasses and re-read…
Good Luck!
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" it has some kind of "remote management" (not Drac, but BMC? )"
Normally those would be their OWN port on the box though, not part of the normal nic. Remote management would be for outofband access normally and a different port than standard nic, even if built onboard and not a add on drac card, etc.
R200 - will look into what I see about that model.
edit: Yup looks like you can do a shared lan method. That has go to be it! Try telnet to the IP and see what prompt you get.