X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fip%2Fip6_packet.h;h=70c3dab473d8a9746d99e60618cc2418af480846;hb=refs%2Fchanges%2F53%2F11053%2F9;hp=9916f3000cbec54e73601217f1ad9ba35470e36b;hpb=0d65d11053395bde7bd8c36439e9025e50ea8028;p=vpp.git

diff --git a/src/vnet/ip/ip6_packet.h b/src/vnet/ip/ip6_packet.h
index 9916f3000cb..70c3dab473d 100644
--- a/src/vnet/ip/ip6_packet.h
+++ b/src/vnet/ip/ip6_packet.h
@@ -360,6 +360,7 @@ ip6_set_traffic_class_network_order (ip6_header_t * ip6, u8 dscp)
 {
   u32 tmp =
     clib_net_to_host_u32 (ip6->ip_version_traffic_class_and_flow_label);
+  tmp &= 0xf00fffff;
   tmp |= (dscp << 20);
   ip6->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (tmp);
 }