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    Intermittent IPv6 Issues

    Scheduled Pinned Locked Moved IPv6
    12 Posts 3 Posters 5.0k Views
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    • D
      databeestje
      last edited by

      DHCPv6 does not provide the gateway, this is done by the router advertisement daemon. Radvd.

      Check if radvd is actually running. ps auxww|grep radvd

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      • M
        Matthias
        last edited by

        It appears to be running

        root  47732  0.0  0.3  3328  1264  ??  Ss    6:43PM  0:01.62 /usr/local/sbin/radvd -C /var/etc/radvd.conf -m syslog

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        • D
          databeestje
          last edited by

          ok, that's good. If it happens again, check if the process on pfSense still exists.

          If it doesn't, press save on dhcpv6 server settings, that should launch it again.

          Is this primarily wireless computers? Some accesspoints handle multicast badly, as in, they drop it.

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          • M
            Matthias
            last edited by

            No it happens across all computers. I don't seem to be receiving an address from the DHCPv6 server again. Only the two from stateless autoconfig. I tried clicking save on the DHCPv6 server and doing a release/renew but it doesn't seem to pick one up.

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            • M
              Matthias
              last edited by

              This is still an on going issue for me. I am still not receiving an address through DCHPv6 nor am I getting the default gateway. I am, however, receiving two temporary addresses and the correct DNS server

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              • D
                databeestje
                last edited by

                Do you happen to have personal firewalls installed or corporate virus scanners on those computers?

                Symantec Endpoint Protection with the default rules blocks IPv6 traffic entirely. There is another one that does this too.

                Otherwise I need access to your box to see why.

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                • M
                  Matthias
                  last edited by

                  Nothing besides Windows Firewall and and Microsoft Security Essentials. I just did a little testing and when I turn the firewall off for the Home and Work networks I get a DHCPv6 address but no gateway, dns or stateless autoconfig. If I turn off both the work/home and public network firewall I get two stateless autoconfig address, dns and the link local address of the gateway interface.

                  Edit: Changing the mode to Managed I get a DHCPv6 assigned address, dns, and gateway with firewall on.

                  On a side note, is there a way to select multiple firewall rules and disable them in pfsense? took me a while to disable everything but a permit all rule.

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                  • D
                    databeestje
                    last edited by

                    We only have a delete button for firewall rules, but that doesn't sound like too bad of a idea.

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                    • M
                      Matthias
                      last edited by

                      I'll definitely be looking forward to it.

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                      • C
                        cmb
                        last edited by

                        You just have to click on the pass/block/reject icon to quickly disable a single rule. No way to do that in bulk but it doesn't take much to click through even numerous rules to disable them.

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                        • M
                          Matthias
                          last edited by

                          Which I do but it does become a bit of a pain to click through roughly 50 rules when you have those nice check boxes right beside each one that could be tied to a disable/enable button.

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