2016-03-23 14:52 GMT+03:00 Daniel P. Berrange <berrange@redhat.com>:
Ok, I took me a while to understand what the point of this is. I eventually found this comment in /usr/include/linux/if_addr.h
* IFA_ADDRESS is prefix address, rather than local interface address. * It makes no difference for normally configured broadcast interfaces, * but for point-to-point IFA_ADDRESS is DESTINATION address, * local address is supplied in IFA_LOCAL attribute.
Likewise in ip-address(8) manpage
peer ADDRESS the address of the remote endpoint for pointopoint inter‐ faces. Again, the ADDRESS may be followed by a slash and a decimal number, encoding the network prefix length. If a peer address is specified, the local address cannot have a prefix length. The network prefix is associated with the peer rather than with the local address.
So, if we accept ip, broader & route info, it makes sense that we also accept a peer address.
Yes, and broadcast and peer (or remote) mutually exclusive. -- Vasiliy Tolstov, e-mail: v.tolstov@selfip.ru