Xen devel - May 2010 - [PATCH] Add interface name definition support for xend-relocation-address

Hi,
this is patch to add a new feature for xend-relocation-address option to 
support definition by interface name which can be useful for people 
having e.g. a cluster environment with multiple network interfaces on 
all of the machines with only one reserved to be registered to a private 
cluster network. This way they won''t need to specify the relocation 
address manually on all the machines but just simple providing the 
interface name to get the IP address from would do the job (all the 
machines have to have this interface named the same to make it working, 
of course).

Technically it reads the interface name and gets it''s IP address using 
ioctl call of SIOCGIFADDR and if the interface doesn''t have the
address,
i.e. if non-existing interface or hostname was provided the original 
ifname is returned to preserve the old behaviour.

Signed-off-by: Michal Novotny <minovotn@redhat.com>

-- 
Michal Novotny<minovotn@redhat.com>, RHCE
Virtualization Team (xen userspace), Red Hat



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