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    BGP IPv6 error

    General pfSense Questions
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    • S
      s_serra
      last edited by s_serra

      Hello,

      I'm using the FRR package to do BGP. The BGP IPv6 session does not come online and appears as V 4. I think this is not normal. Is it possible for FRR to have a bug with IPv6?

      IPv4 Unicast Summary (VRF default):
      BGP router identifier x.x.x.x, local AS number xxxxxx vrf-id 0
      BGP table version 0
      RIB entries 0, using 0 bytes of memory
      Peers 2, using 27 KiB of memory
      
      Neighbor           V         AS   MsgRcvd   MsgSent   TblVer  InQ OutQ  Up/Down State/PfxRcd   PfxSnt Desc
      x.x.x.x      4     209533    191605       108        0    0    0 00:17:36     (Policy) (Policy) iFogV4
      x:x:x::x (Isn't the IPv6 neighbor here strange?) 4     209533         0         0        0    0    0    never       Active        0 iFogV6
      
      Total number of neighbors 2
      
      IPv6 Unicast Summary (VRF default):
      BGP router identifier x.x.x.x, local AS number xxxxxx vrf-id 0
      BGP table version 1
      RIB entries 1, using 192 bytes of memory
      Peers 1, using 13 KiB of memory
      
      Neighbor           V         AS   MsgRcvd   MsgSent   TblVer  InQ OutQ  Up/Down State/PfxRcd   PfxSnt Desc
      x:x:x::35 4     209533         0         0        0    0    0    never       Active        0 iFogV6
      
      Total number of neighbors 1
      

      f038c4ba-dcc1-4624-9b6d-a9e773714cba-image.png

      54b8dd11-82ef-41ac-91f3-7b47b5560ada-image.png

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      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by

        Was this working and then failed?

        Has it ever worked with pfSense/FRR?

        Has it ever worked with anything?

        S 1 Reply Last reply Reply Quote 0
        • S
          s_serra @stephenw10
          last edited by

          @stephenw10

          Yes, with IPv4 the BGP session is online and working. The BGP session over IPv6 never worked.

          ea270a4f-bc0b-4a51-91b4-8e32af46f2b8-image.png

          45a82934-2a1b-49a3-8123-8b56d60e6834-image.png

          S 1 Reply Last reply Reply Quote 0
          • S
            s_serra @s_serra
            last edited by

            BGP on the other side is working.

            772d7238-0bec-452b-801a-630380747331-image.png

            S 1 Reply Last reply Reply Quote 0
            • S
              s_serra @s_serra
              last edited by

              4582d5e2-7e4b-4974-8c6d-d786522a64c0-image.png

              1e656a02-0698-4bec-8031-d0685b503262-image.png

              With IPv4 I can see traffic in the GRE tunnel, with IPv6 no traffic appears.

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              • stephenw10S
                stephenw10 Netgate Administrator
                last edited by

                Do you see states opened for the BGP traffic? Do you see blocked traffic in the firewall log?

                S 1 Reply Last reply Reply Quote 0
                • S
                  s_serra @stephenw10
                  last edited by

                  @stephenw10

                  I see BGP states with IPv4 but not with IPv6. I don't see blocked traffic in the IPv6 firewall logs for BGP. I think the FRR is not sending IPv6 packets to the network.

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                  • stephenw10S
                    stephenw10 Netgate Administrator
                    last edited by

                    So you see it opening states outbound to the configured neighbour IPv4 address?

                    S 1 Reply Last reply Reply Quote 0
                    • S
                      s_serra @stephenw10
                      last edited by

                      @stephenw10

                      Yes, I see the BGP session opening sates via IPv4 but not IPv6.

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