ipsec: User can choose the UDP source port

Type: feature

thus allowing NAT traversal,

Signed-off-by: Neale Ranns <nranns@cisco.com>
Change-Id: Ie8650ceeb5074f98c68d2d90f6adc2f18afeba08
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
diff --git a/src/vnet/ipsec/ipsec_format.c b/src/vnet/ipsec/ipsec_format.c
index bf398cb..98de779 100644
--- a/src/vnet/ipsec/ipsec_format.c
+++ b/src/vnet/ipsec/ipsec_format.c
@@ -310,6 +310,9 @@
     s = format (s, " key %U", format_ipsec_key, &sa->integ_key);
   else
     s = format (s, " key [redacted]");
+  s = format (s, "\n   UDP:[src:%d dst:%d]",
+	      clib_host_to_net_u16 (sa->udp_hdr.src_port),
+	      clib_host_to_net_u16 (sa->udp_hdr.dst_port));
 
   vlib_get_combined_counter (&ipsec_sa_counters, sai, &counts);
   s = format (s, "\n   packets %u bytes %u", counts.packets, counts.bytes);