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    pfSense sends packet as 0.0.0.0

    Scheduled Pinned Locked Moved General pfSense Questions
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    • T Offline
      Topogigio @NogBadTheBad
      last edited by

      @NogBadTheBad NAT outgoing:

      nat.jpg

      The last mapping is what I added as workaround.
      Previous two are specific rules (working well) for two specific hosts in the LAN that need specific outgoing IP address.

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      • T Offline
        Topogigio @NogBadTheBad
        last edited by

        @NogBadTheBad rules LAN

        rules.jpg

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        • johnpozJ Online
          johnpoz LAYER 8 Global Moderator
          last edited by

          Curious why do you have 2 specific IPs in your auto outbound nats? 10.77.36.1 and .5

          What specific IP of client where you pinging from to 1.1.1.1 when you saw the outbound from 0.0.0.0?

          And your hybrid, so you have specific vips on your wan?

          Trying to figure out how your auto rules match up to your networks.. From your rules I see only 2 interfaces. So that would be 2 networks in auto. If it was showing your 2 ipsec, why do you only have 3 there should be 4?? And if the singles are your ipsec? Where is the 3rd range coming from..

          So yeah a bit confusing...

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          • T Offline
            Topogigio @johnpoz
            last edited by

            @johnpoz I was pinging from pfSense itself, not from a client. From clients works.

            Yes I have some additional VIPs

            Yes I have two LANs + two IPSECs. LANs are 10.77.32.0/26 and 10.77.32.64/26. 10.77.36.1 and .5 are IPs on the point-to-point IPSEC tunnels. 172.30.98.0/24 is a subnet on the remote side of IPSEC (this is strange, yes).

            However as I said the problem is not from the connected networks. The problem is only from pfSense itself.

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            • stephenw10S Offline
              stephenw10 Netgate Administrator
              last edited by

              Can we see an example in a pcap?

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              • johnpozJ Online
                johnpoz LAYER 8 Global Moderator
                last edited by johnpoz

                @Topogigio said in pfSense sends packet as 0.0.0.0:

                but is seems having trouble connecting to Internet.

                In what manner? Are you saying it can not check for updates? Unbound is not working... What is not working.. Other than when you do a manual ping, you say you see source of all zeros? When you don't pick an interface?

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                If you get confused: Listen to the Music Play
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                • T Offline
                  Topogigio @johnpoz
                  last edited by

                  @johnpoz I noticed the problem because it was unable to populate the available package list..
                  So I noticed that it was unable to resolve DNS, then that was unable to ping, and so on.
                  After the outpoing NAT rule I added as workaround all started to work.

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                  • johnpozJ Online
                    johnpoz LAYER 8 Global Moderator
                    last edited by johnpoz

                    so when you remove that rule, it doesn't work anymore? Or maybe unbound just had an issue? If you can not resolve.. Did you see dns traffic going out with all zeros as source?

                    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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                    • jimpJ Offline
                      jimp Rebel Alliance Developer Netgate
                      last edited by

                      1. You should never have an outbound NAT rule with a source of any -- fix that before anything else. You are in hybrid mode so it's unnecessary anyhow.
                      2. Let's see the pcap, or a screenshot of it loaded in wireshark
                      3. What shows up in Diagnostics > States for the traffic that is sourced as 0.0.0.0?

                      The last time this happened there was something unusual on the user's setup, though I can't remember what it was. I want to say maybe it was an IPv6-only IPsec VTI instance but I'm probably misremembering.

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                      • T Offline
                        Topogigio @johnpoz
                        last edited by

                        @johnpoz If I remove that rule, it does not work anymore. If I remove that rule I see traffic (ICMP request for example) from pfSense with 0.0.0.0 as source. Only traffic from pfSense itself, not traffic from other hosts routed through it.

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                        • T Offline
                          Topogigio @jimp
                          last edited by

                          @jimp

                          • I know it. I added it as workaround, without that pfSense is unable to contact the world to resolve DNS or download updates.
                          • sorry, a pcap from where? I have access to pfSense and nothing else on the external side.

                          From the pfSense:

                          PING 8.8.8.8 (8.8.8.8): 56 data bytes

                          --- 8.8.8.8 ping statistics ---
                          3 packets transmitted, 0 packets received, 100.0% packet loss


                          15:37:32.819751 IP 0.0.0.0 > 8.8.8.8: ICMP echo request, id 32851, seq 0, length 64
                          15:37:33.830224 IP 0.0.0.0 > 8.8.8.8: ICMP echo request, id 32851, seq 1, length 64
                          15:37:34.840837 IP 0.0.0.0 > 8.8.8.8: ICMP echo request, id 32851, seq 2, length 64

                          states: I cannot find anything related to 8.8.8.8


                          I have IPSEC VTI interfaces, but I'm sure that the problem has started AFTER I configured them (because I required OSPF so I installed the package after the VPNs were connected. However can be something there, I agree. But I cannot understand why and what..

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                          • stephenw10S Offline
                            stephenw10 Netgate Administrator
                            last edited by

                            No states shown for 0.0.0.0 either?

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                            • T Offline
                              Topogigio @stephenw10
                              last edited by

                              @stephenw10 sorry, found:

                              WAN icmp 0.0.0.0:25462 -> 8.8.8.8:25462 0:0 3 / 0 252 B / 0 B

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                              • jimpJ Offline
                                jimp Rebel Alliance Developer Netgate
                                last edited by

                                Show the entire output of ifconfig -a and netstat -rn.

                                Something is broken in your setup and it's not NAT. The NAT is hiding the real issue.

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                                • T Offline
                                  Topogigio @jimp
                                  last edited by

                                  @jimp Routing tables

                                  Internet:
                                  Destination Gateway Flags Netif Expire
                                  default X.X.X.254 UGS hn0
                                  10.0.0.0/24 10.77.36.1 UG1 ipsec100
                                  10.0.1.0/24 10.77.36.1 UG1 ipsec100
                                  10.0.2.0/24 10.77.36.1 UG1 ipsec100
                                  10.20.0.0/22 10.77.36.1 UG1 ipsec100
                                  10.40.0.0/25 10.77.36.1 UG1 ipsec100
                                  10.40.0.0/24 10.77.36.1 UG1 ipsec100
                                  10.40.0.128/25 10.77.36.1 UG1 ipsec100
                                  10.77.32.0/26 link#6 U hn1
                                  10.77.32.1 link#6 UHS lo0
                                  10.77.32.64/26 link#7 U hn2
                                  10.77.32.65 link#7 UHS lo0
                                  10.77.36.1 link#8 UH ipsec100
                                  10.77.36.2 link#8 UHS lo0
                                  10.77.36.5 link#9 UH ipsec200
                                  10.77.36.6 link#9 UHS lo0
                                  X.X.X.104 link#5 UHS lo0
                                  X.X.X.104/32 link#5 U hn0
                                  X.X.X.105 link#5 UHS lo0
                                  X.X.X.105/32 link#5 U hn0
                                  X.X.X.106 link#5 UHS lo0
                                  X.X.X.106/32 link#5 U hn0
                                  X.X.X.40/30 10.77.36.1 UG1 ipsec100
                                  X.X.X.84/30 10.77.36.1 UG1 ipsec100
                                  X.X.X.246 X.X.X.254 UGHS hn0
                                  X.X.X.38 X.X.X.254 UGHS hn0
                                  127.0.0.1 link#1 UH lo0
                                  X.X.X.254 02:00:00:5f:28:ad UHS hn0
                                  172.16.0.0/22 10.77.36.1 UG1 ipsec100
                                  172.19.0.0/16 10.77.36.1 UG1 ipsec100
                                  172.19.16.64/26 10.77.36.1 UG1 ipsec100
                                  172.19.32.0/20 10.77.36.1 UG1 ipsec100
                                  172.26.0.0/16 10.77.36.1 UG1 ipsec100
                                  172.27.0.0/16 10.77.36.1 UG1 ipsec100
                                  172.27.64.0/19 10.77.36.1 UG1 ipsec100
                                  172.29.0.0/16 10.77.36.1 UG1 ipsec100
                                  172.30.94.0/26 10.77.36.1 UG1 ipsec100
                                  172.30.94.64/26 10.77.36.1 UG1 ipsec100
                                  172.30.94.128/26 10.77.36.1 UG1 ipsec100
                                  172.30.96.0/24 10.77.36.1 UG1 ipsec100
                                  172.30.98.0/24 10.77.36.1 UGS ipsec100
                                  172.30.99.0/24 10.77.36.1 UG1 ipsec100
                                  172.30.252.0/24 10.77.36.1 UG1 ipsec100
                                  172.30.254.1/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.2/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.11/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.12/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.13/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.14/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.15/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.16/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.28/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.29/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.34/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.35/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.46/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.47/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.53/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.54/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.55/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.56/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.59/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.60/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.63/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.64/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.71/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.72/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.73/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.74/32 10.77.36.1 UG1 ipsec100
                                  172.30.254.76/30 10.77.36.1 UG1 ipsec100
                                  172.30.254.80/30 10.77.36.1 UG1 ipsec100
                                  172.160.10.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.0.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.1.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.2.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.19.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.21.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.22.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.24.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.29.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.32.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.33.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.34.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.41.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.47.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.51.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.52.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.96.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.97.0/26 10.77.36.1 UG1 ipsec100
                                  192.168.97.64/26 10.77.36.1 UG1 ipsec100
                                  192.168.100.0/24 10.77.36.1 UG1 ipsec100
                                  192.168.103.192/26 10.77.36.1 UG1 ipsec100
                                  192.168.190.0/24 10.77.36.1 UG1 ipsec100
                                  195.43.163.9/32 10.77.36.1 UG1 ipsec100
                                  195.43.178.150/32 10.77.36.1 UG1 ipsec100

                                  Internet6:
                                  Destination Gateway Flags Netif Expire
                                  ::1 link#1 UH lo0
                                  fe80::%lo0/64 link#1 U lo0
                                  fe80::1%lo0 link#1 UHS lo0
                                  fe80::%hn0/64 link#5 U hn0
                                  fe80::ff:fe5f:28ad%hn0 link#5 UHS lo0
                                  fe80::%hn1/64 link#6 U hn1
                                  fe80::215:5dff:fe5a:1601%hn1 link#6 UHS lo0
                                  fe80::%hn2/64 link#7 U hn2
                                  fe80::215:5dff:fe5a:1602%hn2 link#7 UHS lo0
                                  fe80::%ipsec1000/64 link#8 U ipsec100
                                  fe80::215:5dff:fe5a:1601%ipsec1000 link#8 UHS lo0
                                  fe80::%ipsec2000/64 link#9 U ipsec200
                                  fe80::215:5dff:fe5a:1601%ipsec2000 link#9 UHS lo0

                                  Shell Output - ifconfig -a

                                  lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
                                  options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
                                  inet6 ::1 prefixlen 128
                                  inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
                                  inet 127.0.0.1 netmask 0xff000000
                                  nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
                                  groups: lo
                                  enc0: flags=41<UP,RUNNING> metric 0 mtu 1536
                                  nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
                                  groups: enc
                                  pfsync0: flags=0<> metric 0 mtu 1500
                                  groups: pfsync
                                  pflog0: flags=100<PROMISC> metric 0 mtu 33160
                                  groups: pflog
                                  hn0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
                                  options=48001b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,LINKSTATE,TXCSUM_IPV6>
                                  ether 02:00:00:5f:28:ad
                                  hwaddr 02:00:00:5f:28:ad
                                  inet6 fe80::ff:fe5f:28ad%hn0 prefixlen 64 scopeid 0x5
                                  inet X.X.X.104 netmask 0xffffffff broadcast X.X.X.104
                                  inet X.X.X.105 netmask 0xffffffff broadcast X.X.X.105
                                  inet X.X.X.106 netmask 0xffffffff broadcast X.X.X.106
                                  nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
                                  media: Ethernet autoselect (10Gbase-T <full-duplex>)
                                  status: active
                                  hn1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
                                  options=48001b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,LINKSTATE,TXCSUM_IPV6>
                                  ether 00:15:5d:5a:16:01
                                  hwaddr 00:15:5d:5a:16:01
                                  inet6 fe80::215:5dff:fe5a:1601%hn1 prefixlen 64 scopeid 0x6
                                  inet 10.77.32.1 netmask 0xffffffc0 broadcast 10.77.32.63
                                  nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
                                  media: Ethernet autoselect (10Gbase-T <full-duplex>)
                                  status: active
                                  hn2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
                                  options=48001b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,LINKSTATE,TXCSUM_IPV6>
                                  ether 00:15:5d:5a:16:02
                                  hwaddr 00:15:5d:5a:16:02
                                  inet6 fe80::215:5dff:fe5a:1602%hn2 prefixlen 64 scopeid 0x7
                                  inet 10.77.32.65 netmask 0xffffffc0 broadcast 10.77.32.127
                                  nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
                                  media: Ethernet autoselect (10Gbase-T <full-duplex>)
                                  status: active
                                  ipsec1000: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1422
                                  tunnel inet X.X.X.104 --> X.X.X.246
                                  inet6 fe80::215:5dff:fe5a:1601%ipsec1000 prefixlen 64 scopeid 0x8
                                  inet 10.77.36.2 --> 10.77.36.1 netmask 0xfffffffc
                                  nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
                                  reqid: 1000
                                  groups: ipsec
                                  ipsec2000: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1438
                                  tunnel inet X.X.X.104 --> X.X.X.38
                                  inet6 fe80::215:5dff:fe5a:1601%ipsec2000 prefixlen 64 scopeid 0x9
                                  inet 10.77.36.6 --> 10.77.36.5 netmask 0xfffffffc
                                  nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
                                  reqid: 2000
                                  groups: ipsec

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                                  • Z Offline
                                    Ziomalski
                                    last edited by

                                    Were you able to resolve the issue? I ask because I have a similar problem but specific to a VPN VTI. At my home, I setup an IPsec VTI connection to a fresh EdgeRouter. My Local/Remote subnet is 192.168.51.1/30. However, I noticed the P2 negotiates 0.0.0.0/0 for local/remote.

                                    With Static routes setup, my PC can ping the router and connect to anything on the internet. Exactly as I want and expect. However, pfSense cannot ping. Packet capture shows exactly what you have as 0.0.0.0 source and therefor fails.

                                    This wouldn't be a huge problem except that Gateway-Monitor is broken because it can't ping. Now I realize that without GW-Mon, Firewall rules that have a specified GW get skipped. Even when GW-Mon option is disabled and is supposed to be treated as "always online".

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                                    • jimpJ Offline
                                      jimp Rebel Alliance Developer Netgate @Ziomalski
                                      last edited by

                                      @Ziomalski said in pfSense sends packet as 0.0.0.0:

                                      I noticed the P2 negotiates 0.0.0.0/0 for local/remote.

                                      That is normal for VTI and not related to this isssue.

                                      Remember: Upvote with the ๐Ÿ‘ button for any user/post you find to be helpful, informative, or deserving of recognition!

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