[PATCH] add possibility to use modern "ip"

[Jiri Prchal]

Script uses "ifconfig" only, not up-to-date so much. This patch adds "ip" in condition if exists.

Signed-off-by: Jiri Prchal <jiri.prchal at aksignal.cz>
---
 examples/udhcp/simple.script | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/examples/udhcp/simple.script b/examples/udhcp/simple.script
index e4c1f2d76..d043d39de 100755
--- a/examples/udhcp/simple.script
+++ b/examples/udhcp/simple.script
@@ -6,19 +6,31 @@ RESOLV_CONF="/etc/resolv.conf"
 [ -n "$1" ] || { echo "Error: should be called from udhcpc"; exit 1; }

 NETMASK=""
-[ -n "$subnet" ] && NETMASK="netmask $subnet"
+if [ -x /sbin/ip ]; then
+	[ -n "$subnet" ] && NETMASK="/$subnet"
+else
+	[ -n "$subnet" ] && NETMASK="netmask $subnet"
+fi
 BROADCAST="broadcast +"
 [ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"

 case "$1" in
 	deconfig)
 		echo "Setting IP address 0.0.0.0 on $interface"
-		ifconfig $interface 0.0.0.0
+		if [ -x /sbin/ip ]; then
+			ip addr flush dev $interface
+		else
+			ifconfig $interface 0.0.0.0
+		fi
 		;;

 	renew|bound)
 		echo "Setting IP address $ip on $interface"
-		ifconfig $interface $ip $NETMASK $BROADCAST
+		if [ -x /sbin/ip ]; then
+			ip addr add $ip$NETMASK $BROADCAST dev $interface
+		else
+			ifconfig $interface $ip $NETMASK $BROADCAST
+		fi

 		if [ -n "$router" ] ; then
 			echo "Deleting routers"
--
2.17.1