* use IsDefault() to check explicitly set values

Daemon.cpp

@@ -83,14 +83,14 @@ namespace i2p
 			LogPrint(eLogDebug, "FS: data directory: ", datadir);
 
 			uint16_t port; i2p::config::GetOption("port", port);
-			if (port)
+			if (!i2p::config::IsDefault("port"))
 			{	
 				LogPrint(eLogInfo, "Daemon: accepting incoming connections at port ", port);
 				i2p::context.UpdatePort (port);
 			}	
 
 			std::string host; i2p::config::GetOption("host", host);
-			if (host != "0.0.0.0")
+			if (!i2p::config::IsDefault("host"))
 			{
 				LogPrint(eLogInfo, "Daemon: setting address for incoming connections to ", host);
 				i2p::context.UpdateAddress (boost::asio::ip::address::from_string (host));	

RouterContext.cpp

@@ -48,7 +48,7 @@ namespace i2p
 		if (!port)
 			port = rand () % (30777 - 9111) + 9111; // I2P network ports range
 		std::string host; i2p::config::GetOption("host", host);
-		if (host == "0.0.0.0")
+		if (i2p::config::IsDefault("host"))
 			host = "127.0.0.1"; // replace default address with safe value
 		routerInfo.AddSSUAddress  (host.c_str(), port, routerInfo.GetIdentHash ());
 		routerInfo.AddNTCPAddress (host.c_str(), port);