X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fip%2Fip4_to_ip6.h;h=9fedcc6fa3515146dbf7160dc255d314e124acae;hb=c5d4317ad0425d01893dbb4afad9f16c2cde077d;hp=f2ed13dc381726e9b8f43ddde1b60a7144a98f93;hpb=c8e294b0108c0888b824395b814e2ee1dab6cdb6;p=vpp.git

diff --git a/src/vnet/ip/ip4_to_ip6.h b/src/vnet/ip/ip4_to_ip6.h
index f2ed13dc381..9fedcc6fa35 100644
--- a/src/vnet/ip/ip4_to_ip6.h
+++ b/src/vnet/ip/ip4_to_ip6.h
@@ -518,7 +518,7 @@ ip4_to_ip6_tcp_udp (vlib_buffer_t * p, ip4_to_ip6_set_fn_t fn, void *ctx)
 
       //UDP checksum is optional over IPv4 but mandatory for IPv6
       //We do not check udp->length sanity but use our safe computed value instead
-      if (PREDICT_FALSE (!checksum))
+      if (PREDICT_FALSE (!*checksum))
 	{
 	  u16 udp_len = clib_host_to_net_u16 (ip4->length) - sizeof (*ip4);
 	  csum = ip_incremental_checksum (0, udp, udp_len);