On Thu, Oct 22, 2015 at 10:34:28AM +0200, Thomas Haller wrote: > Kernel allows for zero IPv4 peer addresses (IFA_ADDRESS): > > ip address add 192.168.5.1 peer 0.0.0.0/24 dev dummy > > which is distinct from a usual address like: > > ip address add 192.168.5.1/24 dev dummy > ip address add 192.168.5.1 peer 192.168.5.1/24 dev dummy > > For IPv4, a missing IFA_ADDRESS attribute means that the peer > is 0.0.0.0. See inet_fill_ifaddr(), which does: > > if ((ifa->ifa_address && > nla_put_in_addr(skb, IFA_ADDRESS, ifa->ifa_address)) || > > Signed-off-by: Thomas Haller <thal...@redhat.com>
Acked-by: Phil Sutter <p...@nwl.cc> I wonder why this is not the case for IPv6. What is the functional effect of setting a zero peer with non-zero netmask? Cheers, Phil -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
