diff --git a/a8/udplistener.cc b/a8/udplistener.cc
index 42a3484..6003960 100644
--- a/a8/udplistener.cc
+++ b/a8/udplistener.cc
@@ -15,6 +15,8 @@
 #include <a8/a8.h>
 #include <a8/udplistener.h>
 
+#include <f8/udplog.h>
+
 namespace a8
 {
 
@@ -114,6 +116,12 @@ namespace a8
                                      (struct sockaddr*)&from_addr,
                                      (socklen_t*)&addr_len);
                 if(ret > 0) {
+                    f8::UdpLog::Instance()->Debug("recvfrom host:%s port:%d buflen:%d",
+                                                  {
+                                                   inet_ntoa(from_addr.sin_addr),
+                                                   from_addr.sin_port,
+                                                   ret
+                                                  });
                     a8::UdpPacket* pkt = new a8::UdpPacket();
                     pkt->buf = (char*)malloc(ret + 1);
                     memmove((void*)pkt->buf, recv_buf, ret);