Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    radvd/dhcp6c not working over vlan interfaces

    Scheduled Pinned Locked Moved L2/Switching/VLANs
    5 Posts 2 Posters 736 Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Q
      qsystems
      last edited by

      I've recently upgraded to 2 gig google fiber and due to a lack of multigig ports I have resorted to combining several networks through the use of vlans on one 10 gig interface.

      IPv4 has no problems, however assigning addresses to clients for IPv6 does not work and nor can I obtain IPv6 addresses from Google. I do use a Hurricane Electric tunnel as well for 'static' IPv6 addresses.

      Some googling leads me to believe that the vlan interfaces are not being created with 'vlan-raw-device' and thus why they are not working. Is this the case? The firewall rules have not changed - it is just the interface assignments that have changed and new vlan interfaces were created to assign the interfaces to.

      From dhcpc6 on the vlan wan interface I do get the following message -
      portal dhcp6c[23456]: transmit failed: Can't assign requested address
      The LAN interface is the base interface for the various vlans as well which also runs dhcpd6 and radvd for the native LAN network.

      JKnottJ 1 Reply Last reply Reply Quote 0
      • JKnottJ
        JKnott @qsystems
        last edited by

        @qsystems

        RADVD works fine for me on a VLAN, but I don't use DHCPv6 on the LAN side.

        PfSense running on Qotom mini PC
        i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
        UniFi AC-Lite access point

        I haven't lost my mind. It's around here...somewhere...

        Q 1 Reply Last reply Reply Quote 0
        • Q
          qsystems @JKnott
          last edited by

          @jknott Last night I moved my guest network from the combined interface to it's own 1 gig interface and I was once again able to get an IPv6 address. So I am assuming that something similar is going on with WAN on vlan 22 and dhcp6c - particularly given the 'Transmit failed' error message that persists across reboots.

          I've spent quite a bit of time working on things since the Google tech left and I've ordered a BCM57810S card off of Amazon so I can directly connect the Google fiber to the pfsense box which should both eliminate the problem with Ipv6, and the problem with the unifi switch where I cannot seem to use 2.5 gig and 10 gig on the two SFP+ ports simultaneously. I do have a Netgear MS510TXPP switch that the unifi switch connects to that is now serving a more active role in the network which seems to freak out more when links go down (redundant links) bringing other things down with it. I did move the multiple vlan lan/wan interface over to the unifi switch though and IPv6 issues with the guest network continued until I assigned it a completely separate interface.

          Unless I have some strange config on pfsense where I have problems with vlans and ipv6? Using a solarflare SFN5161T card in the pfsense box. All other interfaces are intel IGB.

          Q JKnottJ 2 Replies Last reply Reply Quote 0
          • Q
            qsystems @qsystems
            last edited by

            I've moved the wan to it's own IGB interface. The 'transmit failed' error is no longer occurring but still not getting any ipv6 delegations though was working before the upgrade. Will give it 24 hours and see if service returns as google will not give out delegations until the last device expires.

            1 Reply Last reply Reply Quote 0
            • JKnottJ
              JKnott @qsystems
              last edited by

              @qsystems said in radvd/dhcp6c not working over vlan interfaces:

              Unless I have some strange config on pfsense where I have problems with vlans and ipv6?

              For pfsense configuration, there is absolutely no difference between an interface and a VLAN interface. All a VLAN does is add an extra 4 bytes to the frame for the VLAN tag. The only problem I've had with VLANs is when I had an TP-Link access point, which didn't handle VLANs properly.

              PfSense running on Qotom mini PC
              i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
              UniFi AC-Lite access point

              I haven't lost my mind. It's around here...somewhere...

              1 Reply Last reply Reply Quote 0
              • First post
                Last post
              Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.