diff --git a/server/wsproxy/longsessionmgr.cc b/server/wsproxy/longsessionmgr.cc
index 4a2adac..ff11297 100644
--- a/server/wsproxy/longsessionmgr.cc
+++ b/server/wsproxy/longsessionmgr.cc
@@ -100,12 +100,14 @@ std::shared_ptr<LongSession> LongSessionMgr::GetSession(int socket_handle)
 
 void LongSessionMgr::ProcUdpPacket(a8::UdpPacket* pkt)
 {
+    #if 0
     f8::UdpLog::Instance()->Debug("ProcUdpPacket host:%s port:%d buflen:%d",
                                   {
                                    inet_ntoa(pkt->remote_addr.sin_addr),
                                    pkt->remote_addr.sin_port,
                                    pkt->buf_len
                                   });
+    #endif
     const int IKCP_OVERHEAD = 24;
 
     if (pkt->buf_len < IKCP_OVERHEAD) {
diff --git a/third_party/a8 b/third_party/a8
index a6f06f6..03f5f63 160000
--- a/third_party/a8
+++ b/third_party/a8
@@ -1 +1 @@
-Subproject commit a6f06f65b286e16310df08720e8698db86f1df36
+Subproject commit 03f5f63a42a0a72881d224767791efca437d0611