diff --git a/node/Multicaster.hpp b/node/Multicaster.hpp
index e86de0a0d..46ab08ea0 100644
--- a/node/Multicaster.hpp
+++ b/node/Multicaster.hpp
@@ -67,6 +67,8 @@ public:
 	/**
 	 * Bring a peer closer in terms of propagation priority
 	 *
+	 * This gets called from PacketDecoder when a unicast frame is received.
+	 *
 	 * @param nwid Network ID
 	 * @param a Address to bring closer (e.g. due to unicast message)
 	 * @param now Current time
diff --git a/node/PacketDecoder.cpp b/node/PacketDecoder.cpp
index 3269504b5..1560ec1e9 100644
--- a/node/PacketDecoder.cpp
+++ b/node/PacketDecoder.cpp
@@ -487,7 +487,7 @@ bool PacketDecoder::_doMULTICAST_FRAME(const RuntimeEnvironment *_r,const Shared
 
 #ifdef ZT_TRACE_MULTICAST
 		char mct[256];
-		Utils::snprintf(mct,sizeof(mct),"%s <- %.16llx %.16llx %s via %s depth:%u len:%u",_r->identity.address().toString().c_str(),nwid,guid,origin.toString().c_str(),source().toString().c_str(),depth,frameLen);
+		Utils::snprintf(mct,sizeof(mct),"%c %s <- %.16llx %.16llx %s via %s depth:%u len:%u",(_r->topology->amSupernode() ? 'S' : '-'),_r->identity.address().toString().c_str(),nwid,guid,origin.toString().c_str(),source().toString().c_str(),depth,frameLen);
 		_r->demarc->send(Demarc::ANY_PORT,ZT_DEFAULTS.multicastTraceWatcher,mct,strlen(mct),-1);
 #endif
 
@@ -599,7 +599,7 @@ bool PacketDecoder::_doMULTICAST_FRAME(const RuntimeEnvironment *_r,const Shared
 
 #ifdef ZT_TRACE_MULTICAST
 		char mct[256];
-		Utils::snprintf(mct,sizeof(mct),"%s -> %.16llx %.16llx %s via %s",_r->identity.address().toString().c_str(),nwid,guid,origin.toString().c_str(),nextHop.toString().c_str());
+		Utils::snprintf(mct,sizeof(mct),"%c %s -> %.16llx %.16llx %s via %s",(_r->topology->amSupernode() ? 'S' : '-'),_r->identity.address().toString().c_str(),nwid,guid,origin.toString().c_str(),nextHop.toString().c_str());
 		_r->demarc->send(Demarc::ANY_PORT,ZT_DEFAULTS.multicastTraceWatcher,mct,strlen(mct),-1);
 #endif