base-files: implement network_get_gateway(), network_get_gateway6(), network_find_wan() and network_find_wan6() in /lib/functions/network.sh

SVN-Revision: 32397

base-files: implement network_defer_device() and network_ready_device() wrappers for upcoming netifd iface deferring support

SVN-Revision: 32106

SVN-Revision: 31978

base-files: let network_get_device() return the l3 interface, introduce network_get_physdev() to obtain the underlying iface (if applicable)

SVN-Revision: 31960

SVN-Revision: 31937

base-files: introduce /lib/functions/network.sh This file will contain common procedures to deal with network interfaces. Initially provides network_get_ipaddr(), network_get_ipaddr6(), network_get_subnet() and network_get_subnet6() to determine the primary IP addresses or subnets of a given logical interface.

SVN-Revision: 31935