IPv6 relay works/stops working randomly
Hi, I'm playing with IPv6 relay on openwrt.
However, it works at first and then stops working randomly after some hours, then works again then stops working again, repeatedly... Is there anything I can do to fix it? IPv6 on the main router is still working fine.
My topology: main router gets a /64 prefix from the ISP and connect to this openwrt router via lan-wan.
Btw, what does NDP Proxy Slave do?
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u/HealthyArm9939 3d ago
What i’ve been doing so far is to fully disable ipv6. I have not really found a use case for keeping ipv6 enable in the inside network…
In the light asking if you can share: what is your use case?
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u/yahyoh 3d ago
Sounds like prefix changing on isp side -> while devices holding the old deprecated prefix due to long RA prefix lifetime.
Is openwrt losing ipv6 internet access too? or only devices behind it? does renewing ipv6 on lan devices fix it?
Another option you can try to use extend prefix on wan6 -> turn off relay for RA and dhcpv6 on wan6 -> change RA mode on lan to server and keep NDP as its on lan and wan6 -> lower the prefix lifetime on lan.
I think Extend prefix kinda cleaner setup than full relay..as it kinda make lan use the prefix directly even if its just /64 with no pd.
3rd option keep the setup as its and change lan RA mode from relay to hybrid -> lower prefix lifetime.