X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Finterface_output.c;h=eadee69291981ec3ba84cd998a73f12128dd09d6;hb=03328ec8bb86b93fa70bb6b2a9b37c40e686a1f7;hp=73c7a31f0103247c8d1c3811fac14416a754c768;hpb=14053c9dbd75182f5302f7388d17508f3930f7ce;p=vpp.git

diff --git a/src/vnet/interface_output.c b/src/vnet/interface_output.c
index 73c7a31f010..eadee692919 100644
--- a/src/vnet/interface_output.c
+++ b/src/vnet/interface_output.c
@@ -189,7 +189,10 @@ calc_checksums (vlib_main_t * vm, vlib_buffer_t * b)
 	  th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
 	}
       else if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
-	uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
+	{
+	  uh->checksum = 0;
+	  uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
+	}
     }
   else if (is_ip6)
     {