On 2018-10-01, Aham Brahmasmi <aham.brahma...@gmx.com> wrote: > 2) How to disable an interface from joining IPv6 Node Information > multicast group (RFC 4620)? > In sys/netinet6/in6.c, the function in6_update_ifa contains the > following lines: > > /* > * join node information group address > */ > if (in6_nigroup(ifp, hostname, hostnamelen, &mltaddr) == 0) { > imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error); > if (!imm) { > /* XXX not very fatal, go on... */ > } else { > LIST_INSERT_HEAD(&ia6->ia6_memberships, > imm, i6mm_chain); > } > }
Not 100% sure but I think this may have been missed when support for RFC 4620 was removed from the kernel in 2014 https://github.com/openbsd/src/commit/43f29087ef2fc515510c43f9dd706f7bbd9e39b7