X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fin2out.c;h=8b565b1b6d39cb6904da42c063f6f88216bb60a8;hb=3f2dd30b0bf7cf3d82c720d5065178c1fa628c6b;hp=8748013947ccdbfad6daecd8be5de3dc579bc23a;hpb=de3682f510dd02055e124a2d7be831d203a7f402;p=vpp.git

diff --git a/src/plugins/nat/in2out.c b/src/plugins/nat/in2out.c
index 8748013947c..8b565b1b6d3 100755
--- a/src/plugins/nat/in2out.c
+++ b/src/plugins/nat/in2out.c
@@ -794,6 +794,9 @@ static inline u32 icmp_in2out (snat_main_t *sm,
                          src_address /* changed member */);
   ip0->checksum = ip_csum_fold (sum0);
 
+  if (icmp0->checksum == 0)
+    icmp0->checksum = 0xffff;
+
   if (!icmp_is_error_message (icmp0))
     {
       new_id0 = sm0.port;