gpe: fix sub-interface hash lookup

Change-Id: Ice6b3818ee24c7c248bf61e4d6c1ef2a85cb8fb1
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/lisp-gpe/lisp_gpe.c b/src/vnet/lisp-gpe/lisp_gpe.c
index 018895a..8ee2a72 100644
--- a/src/vnet/lisp-gpe/lisp_gpe.c
+++ b/src/vnet/lisp-gpe/lisp_gpe.c
@@ -91,8 +91,8 @@
 			 unformat_ip_address, &lloc,
 			 unformat_ip_address, &rloc, &w))
 	{
-	  pair.lcl_loc = lloc;
-	  pair.rmt_loc = rloc;
+	  ip_address_copy (&pair.lcl_loc, &lloc);
+	  ip_address_copy (&pair.rmt_loc, &rloc);
 	  pair.weight = w;
 	  pair.priority = 0;
 	  vec_add1 (pairs, pair);