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Re: [libvirt] [ 3/3] assign peer address if it provided in network



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 interÔÇÉ
>               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


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