check if our external IP is valid

libi2pd/SSUSession.cpp

@@ -296,10 +296,18 @@ namespace transport
 		if (s.Verify (m_RemoteIdentity, payload))
 		{
 			LogPrint (eLogInfo, "SSU: Our external address is ", ourIP.to_string (), ":", ourPort);
+			if (!i2p::util::net::IsInReservedRange (ourIP))
+			{	
 				i2p::context.UpdateAddress (ourIP);
 				SendSessionConfirmed (y, ourAddressAndPort, addressAndPortLen); 
 			}	
 			else
+			{	
+				LogPrint (eLogError, "SSU: Wrong external address ", ourIP.to_string ());
+				Failed ();
+			}	
+		}
+		else
 		{
 			LogPrint (eLogError, "SSU: message 'created' signature verification failed");
 			Failed ();
@@ -682,7 +690,10 @@ namespace transport
 		if (!ourSize) return;
 		buf += ourSize; len -= ourSize;
 		LogPrint (eLogInfo, "SSU: Our external address is ", ourIP.to_string (), ":", ourPort);
+		if (!i2p::util::net::IsInReservedRange (ourIP))
 			i2p::context.UpdateAddress (ourIP);
+		else
+			LogPrint (eLogWarning, "SSU: Wrong external address ", ourIP.to_string ());
 		if (ourIP.is_v4 ())
 		{	
 			if (ourPort != m_Server.GetPort ())