limit dhclient to a single interface instead of all that are available.
limit dhclient to a single interface instead of all that are available.

Signed-off-by: James Rayner <474ba67bdb289c6263b36dfd8a7bed6c85b04943@archlinux.org>

jlyo/netcfg,GNU-Pony/netcfg,iphitus/netcfg-updates,Finkregh/netcfg-vlan,GNU-Pony/netcfg,Finkregh/netcfg-vlan,somenxavier/netcfg,somenxavier/netcfg,rubyists/netcfg2