Hi Nico, > On 30. Jan 2024, at 10:32, Nico Schottelius via Bird-users > <bird-users@network.cz> wrote: > OSPFv3 works fine on IPv6 and when creating two instances, one for IPv6 > one for IPv4, things look correct. But how does OSFPv3 conceptually work > if the interface of the ospf area do not have IPv4 addresses themselves? > > In the BGP case we can use "extended next hop on;" to use the IPv6 > nexthop for IPv4, but I did not find a similar setting for OSPF to > accept IPv6 nexthops for IGP IPv4 addresses. > > Is there a way to purely go IPv6 only and still relay stub network IPv4 > information via an IPv6 only internal area?
I was facing the same issue before, and unfortunately, RFC 5838 explicitly forbids IPv4 over IPv6 for OSPF. As an alternative suggestion, I have since evaluated babel which mostly suits my purposes (except for some features not yet implemented in bird, like strict bind) - but maybe it works for you? Cheers Sebastian
