Hi Michael, On Wed, Oct 25, 2023 at 11:45 AM Michael Richardson <mcr@xxxxxxxxxxxx> wrote: > > > Mathis Marion <mathis.marion@xxxxxxxxxx> wrote: > > However, my observations suggest that it is actually not the case when > > forwarding packets. Instead, the IPv6 header of the packet is modified > > in a way which violates the IPv6 specification (RFC 8200 section 4): > > I have not sat down to read the code to understand what it actually does, so > I can't really comment at this point. I salute you for having gotten into > whether the code is compliant. > > But, I did write spend way too much of my life writing > https://datatracker.ietf.org/doc/rfc9008/ > to deal with the perception that RPL networks had to violate 8200. > > I know that Linux does not (yet) deal with all the minutia in 9008. > I wish that I had time to fix that. To put everything into IPIP and back is not a question of doing a iptunnel ip6tnl [0] and doing the right configuration... just do get everything over "the internet" which I think is the whole reason why putting everything into IPIP? - Alex [0] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/net/ipv6/ip6_tunnel.c
