dhcp: allow specifying the exact interface name to use via interface= kernel cmdline

Signed-off-by: Ricardo Pardini <[email protected]>

Author: rpardini

files/dhcp.sh

@@ -11,6 +11,11 @@ run_dhcp_client() {
 	one_shot="$1"
 	al="e*"
 
+	interface=$(sed -n 's/.* interface=\([a-z,A-Z,0-9]*\).*/\1/p' /proc/cmdline)
+	if [ -n "$interface" ]; then
+		al="$interface"
+	fi
+
 	vlan_id=$(sed -n 's/.* vlan_id=\([0-9]*\).*/\1/p' /proc/cmdline)
 	if [ -n "$vlan_id" ]; then
 		al="e*.*"