X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fout2in.c;h=ebd0dc4ba9a20999bf689d2094487eb3bbc8f978;hb=3f2dd30b0bf7cf3d82c720d5065178c1fa628c6b;hp=7f811d97b598a309341f7bd893209588a95bcf6e;hpb=de3682f510dd02055e124a2d7be831d203a7f402;p=vpp.git

diff --git a/src/plugins/nat/out2in.c b/src/plugins/nat/out2in.c
index 7f811d97b59..ebd0dc4ba9a 100755
--- a/src/plugins/nat/out2in.c
+++ b/src/plugins/nat/out2in.c
@@ -644,6 +644,9 @@ static inline u32 icmp_out2in (snat_main_t *sm,
                          dst_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;