Fixed annoying arpsend warning on VE start

The problem arises when there are UP devices with no assigned IP. Arpsend can't
form ARP packet without it and thus fails, raises:

arpsend: can't get iface ethX address : Cannot assign requested address
vps-net_add WARNING: arpsend -c 1 -w 1 -D  -e *** ethX: FAILED

warning. This is not good as attempt to send ARP from the interface without IP
is useless.  So, filter is fixed in order to exclude such devices.

Additionally, fixed dependancy on awk, which leads to incorrect behaviour on some
it's versions.

Bug #189
1 file changed