On Wed, Mar 01, 2017 at 04:07:38PM -0800, David Ahern wrote: > On 3/1/17 3:16 PM, Martin KaFai Lau wrote: > > [ An unrelated topic. I wonder ip -6 r del xyz::/0 would delete > > the gateway route...] > > a very related question ... > > ip -6 r del x::/0 comes down to the kernel as delete '::/0' (plen is 0, > so cfg->fc_dst is 0). It ends up on the null_entry from fib6_locate b/c > of the 0 prefix length, so it is another variant of 'ip -6 ro del ::/0' Agree on the plen == 0 part.
I actually meant if 'ip -6 r del xyz::/0' would delete any _default_ _gateway_ also. By looking at ip6_route_del() alone, it seems it only checks ipv6_addr_equal(&cfg->fc_gateway, &rt->rt6i_gateway) if (cfg->fc_flags & RTF_GATEWAY) is true. Your test case makes me think about this possibility but it is not related to what this patch is trying to fix. I should have started another thread for this :p
