diff --git a/node/Peer.cpp b/node/Peer.cpp
index 2040a3b4d..39792eb06 100644
--- a/node/Peer.cpp
+++ b/node/Peer.cpp
@@ -536,8 +536,10 @@ unsigned int Peer::doPingAndKeepalive(void *tPtr,int64_t now)
 
 		performMultipathStateCheck(tPtr, now);
 
+		char buf[64];
 		const bool sendFullHello = ((now - _lastSentFullHello) >= ZT_PEER_PING_PERIOD);
 		if (sendFullHello) {
+			fprintf(stderr, "sendFullHello %s \n", _id.address().toString(buf));
 			_lastSentFullHello = now;
 		}
 
diff --git a/service/OneService.cpp b/service/OneService.cpp
index 1ffab2299..cb193776c 100644
--- a/service/OneService.cpp
+++ b/service/OneService.cpp
@@ -1178,6 +1178,7 @@ class OneServiceImpl : public OneService
 
 				// Refresh bindings in case device's interfaces have changed, and also sync routes to update any shadow routes (e.g. shadow default)
 				if (((now - lastBindRefresh) >= (_node->bondController()->inUse() ? ZT_BINDER_REFRESH_PERIOD / 4 : ZT_BINDER_REFRESH_PERIOD))||restarted) {
+					fprintf(stderr, "binder refresh\n");
 
 					// If secondary port is not configured to a constant value and we've been offline for a while,
 					// bind a new secondary port. This is a workaround for a "coma" issue caused by buggy NATs that stop
@@ -1189,6 +1190,9 @@ class OneServiceImpl : public OneService
 						else if (now - lastOnline > (ZT_PEER_PING_PERIOD * 2) || restarted) {
 							lastOnline = now;	// don't keep changing the port before we have a chance to connect
 							_ports[1] = _getRandomPort();
+
+							// TODO delete
+							fprintf(stderr, "randomized secondary port. Now it's %d\n", _ports[1]);
 						}
 					}