From: David Ahern <dsah...@kernel.org> Date: Tue, 16 Apr 2019 17:31:43 -0700
> From: David Ahern <dsah...@gmail.com> > > Disabling IPv6 on an interface removes existing entries but nothing prevents > new entries from being manually added. To that end, add a new neigh_table > operation, allow_add, that is called on RTM_NEWNEIGH to see if neighbor > entries are allowed on a given device. If IPv6 is disabled on the device, > allow_add returns false and passes a message back to the user via extack. > > $ echo 1 > /proc/sys/net/ipv6/conf/eth1/disable_ipv6 > $ ip -6 neigh add fe80::4c88:bff:fe21:2704 dev eth1 lladdr de:ad:be:ef:01:01 > Error: IPv6 is disabled on this device. > > Signed-off-by: David Ahern <dsah...@gmail.com> Also applied, thanks.
