pg: update packet generator test scripts

update packet generator test scripts to reflect latest code changes

Type: fix

Signed-off-by: ShivaShankarK <shivaashankar1204@gmail.com>
Change-Id: I048a5e8b9b0506dcb0b664e5549d13f51b2e2ea6
diff --git a/src/scripts/vnet/lfib/mpls-pop-to-mpls b/src/scripts/vnet/lfib/mpls-pop-to-mpls
index 1b7ef8d..34a5790 100644
--- a/src/scripts/vnet/lfib/mpls-pop-to-mpls
+++ b/src/scripts/vnet/lfib/mpls-pop-to-mpls
@@ -16,7 +16,7 @@
 set int ip address loop0 1.0.0.1/24
 set int ip address loop1 2.0.0.1/24
 
-set ip arp static loop1 2.0.0.2 dead.beef.babe
+set ip neighbor static loop1 2.0.0.2 dead.beef.babe
 set int mpls loop1 enable
 
 ip route add 2.2.2.2/32 via 2.0.0.2 loop1 out-label 33