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Thanks for your quick reply.
1. So did I get it right your IPv6 is now working even when a PPPoE reconnect occurs (nightly or any time during the day) without restarting your router or manually release IPv6?
2. One question is left after thinking more about switching to pfsense. Do they support IPv6 dynamic host aliases like OPNsense does?

Yesterday I have had a look in the forum of them and some are still reporting problems with IPv6 and track interfaces. My favorite solution would be a similiar option in OPNsense.

Sorry for that many question, but I want to be sure as setting up OPNsense took some time for me getting all the stuff right and as pfsense interface is a bit different I'll have to spend a lot of time again, I think.

Thanks again in advance  :)

1. Yes, exactly. It takes a few seconds to get the v6 addresses after reconnecting though.
2. Never used this function, so I'm not sure. Check out the documentation: https://docs.netgate.com/pfsense/en/latest/firewall/aliases.html

Hi there,

I'm new to this forum and just setup my OPNsense two weeks ago. So far I'm really satisfied. Sadly there is one point (bug) that's a bit annoying. I'm using Deutsche Telekom as ISP with PPPoE. Sometimes at night when ASSIA optimizes my line or there is maintenance my clients are losing their IPv6 connection. Seems I'm experiencing the same behavior like you. Does the mentioned option ,,Do not wait for RA" work reliable? Working IPv6 could be the only point using pfSense instead.
Or would updating from 23.1.6 to 23.1.7 improve it?

Thanks in advance for your reply.

I had no issues with IPv6 connectivity since using this function.

[Do not wait for a RA]

Not that I was expecting it (from a changelog perspective) but also the upgrade to 22.7.10_2 did not change the situation.
The VDSL connection (negotiated via a Zyxel Modem on bridge mode in front of it) has also been changed to supervectoring. However, this also did not change anything for the situation described in this thread.

In pfSense the Do not wait for a RA option in DHCP6 Client Configuration seem to solve the issue. Now the LAN interface and all the clients are getting ipv6 addresses instantaneously after the PPPoE connection established.
If you have this option in OPNsense, could you please try if it makes any difference?

Hi Guys,

I'm also experiencing this behavior here in Hungary with a Telekom (subsidiary of DT, also full dual stack) 2/1Gbps GPON line (PPPoE). I tried with pfSense 2.6.0 and the situation is similar, or even worse. Almost never getting ipv6 address for the LAN interface & clients, only for WAN.
I'm no longer sure if the problem is related to the router OS..
Saving this thread if anything comes up.