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/gre-teb b/src/scripts/vnet/gre-teb
index ec0f619..992005c 100644
--- a/src/scripts/vnet/gre-teb
+++ b/src/scripts/vnet/gre-teb
@@ -1,7 +1,7 @@
 create packet-generator interface pg0
 create packet-generator interface pg1
 set int ip address pg1 192.168.2.1/24
-set ip arp pg1 192.168.2.2 6:5:4:3:2:1 static
+set ip neighbor pg1 192.168.2.2 6:5:4:3:2:1 static
 create gre tunnel dst 192.168.2.2 src 192.168.2.1 teb
 
 set int state pg0 up