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-rw-r--r--src/vnet/tcp/tcp_input.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index d3db7ef1eec..614b94a4b06 100644
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -1870,6 +1870,10 @@ tcp_lookup_is_valid (tcp_connection_t * tc, tcp_header_t * hdr)
if (!tc)
return 1;
+ /* Proxy case */
+ if (tc->c_lcl_port == 0 && tc->state == TCP_STATE_LISTEN)
+ return 1;
+
u8 is_valid = (tc->c_lcl_port == hdr->dst_port
&& (tc->state == TCP_STATE_LISTEN
|| tc->c_rmt_port == hdr->src_port));