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> No more nats

Hehehe... writing this from behind NPTv6 (a form of a prefix-to-prefix NAT). I have to use it because this is currently the only working method for a fail-over configuration with two ISPs.

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Even worse - isps give different prefix lengths - I am curious how you are running npt -i spent WAY too long trying to get basic ipv6 failover working - what vendor / etc. Ipv4 failover is basically flawless and internal network doesn't renumber as routes flap

OpenWrt. It does require a custom script. See https://forum.openwrt.org/t/npt6-as-a-core-feature/146399

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