6rd radvd and dhcpdv6 not starting after reboot

[darkcrucible]

Unfortunately my ISP does not offer native IPv6. The best they offer is 6rd which is too bad.

Anyways I've been using opnsense since 24.7.1. I believe this issue has affected all dot releases since then. I still see this on 24.7.6.

If I reboot the opnsense box, radvd and the LAN's dhcp6 fail to load. There's not much special on my setup. I use manual outbound NAT for static port (have outbound for link-local & LAN networks). I also set the MTU of WAN to 1500. I think even disconnecting the WAN Ethernet for a moment then reconnecting can trigger this too.

I'll get messages like this:

Code: [Select]

2024-09-29T12:11:30-07:00       Warning radvd   sendmsg: Can't assign requested address
2024-09-29T12:11:30-07:00       Warning opnsense        /usr/local/etc/rc.bootup: dhcpd_radvd_configure(auto) found no suitable IPv6 address on lan(igc1)
Perhaps radvd/dhcpdv6 is being started too soon before 6rd is done? Just speculation

Last thing to note for now, if I restart the radvd & dhcpd6 services then IPv6 works as normal. Any reboot requires manually logging in to restart the services.

[Andne]

I've noticed on my system too, with a 6rd ISP, that upon reboots DHCPv6 Server isn't running anymore. I hadn't yet spent any time investigating it, but I do see similar messages in my log. If I start DHCPv6 Server manually, it works fine until the next reboot.

I have not been seeing a similar behavior with radvd, but that may just be a configuration thing?