config_get mtu "$config" mtu
config_get macaddr "$config" macaddr
grep "$iface:" /proc/net/dev > /dev/null && \
+ $DEBUG ifconfig "$iface" down && \
$DEBUG ifconfig "$iface" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} up
set_interface_ifname "$config" "$iface"