diff --git a/src/openttd.cpp b/src/openttd.cpp
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -473,29 +473,21 @@ struct AfterNewGRFScan : NewGRFScanCallb
 		if (_switch_mode != SM_NONE) MakeNewgameSettingsLive();
 
 		if (_network_available && network_conn != nullptr) {
-			const char *port = nullptr;
-			const char *company = nullptr;
-			uint16 rport = NETWORK_DEFAULT_PORT;
 			CompanyID join_as = COMPANY_NEW_COMPANY;
-
-			ParseGameConnectionString(&company, &port, network_conn);
+			NetworkAddress address = ParseGameConnectionString(&join_as, network_conn, NETWORK_DEFAULT_PORT);
 
-			if (company != nullptr) {
-				join_as = (CompanyID)atoi(company);
-
-				if (join_as != COMPANY_SPECTATOR) {
-					join_as--;
-					if (join_as >= MAX_COMPANIES) {
-						delete this;
-						return;
-					}
+			if (join_as != COMPANY_NEW_COMPANY && join_as != COMPANY_SPECTATOR) {
+				join_as--;
+				if (join_as >= MAX_COMPANIES) {
+					delete this;
+					return;
 				}
 			}
-			if (port != nullptr) rport = atoi(port);
 
 			LoadIntroGame();
 			_switch_mode = SM_NONE;
-			NetworkClientConnectGame(network_conn, rport, join_as, join_server_password, join_company_password);
+
+			NetworkClientConnectGame(address, join_as, join_server_password, join_company_password);
 		}
 
 		/* After the scan we're not used anymore. */
@@ -585,7 +577,7 @@ int openttd_main(int argc, char *argv[])
 			SetDebugString("net=6");
 			if (mgo.opt != nullptr) {
 				const char *port = nullptr;
-				ParseConnectionString(&port, mgo.opt);
+				ParseFullConnectionString(nullptr, &port, mgo.opt);
 				if (!StrEmpty(mgo.opt)) scanner->dedicated_host = mgo.opt;
 				if (port != nullptr) scanner->dedicated_port = atoi(port);
 			}
@@ -771,15 +763,8 @@ int openttd_main(int argc, char *argv[])
 	NetworkStartUp(); // initialize network-core
 
 	if (debuglog_conn != nullptr && _network_available) {
-		const char *port = nullptr;
-		uint16 rport;
-
-		rport = NETWORK_DEFAULT_DEBUGLOG_PORT;
-
-		ParseConnectionString(&port, debuglog_conn);
-		if (port != nullptr) rport = atoi(port);
-
-		NetworkStartDebugLog(debuglog_conn, rport);
+		NetworkAddress address = ParseConnectionString(debuglog_conn, NETWORK_DEFAULT_DEBUGLOG_PORT);
+		NetworkStartDebugLog(address);
 	}
 
 	if (!HandleBootstrap()) {
@@ -1491,7 +1476,8 @@ void GameLoop()
 		if (_network_reconnect > 0 && --_network_reconnect == 0) {
 			/* This means that we want to reconnect to the last host
 			 * We do this here, because it means that the network is really closed */
-			NetworkClientConnectGame(_settings_client.network.last_host, _settings_client.network.last_port, COMPANY_SPECTATOR);
+			NetworkAddress address = ParseConnectionString(_settings_client.network.last_joined, NETWORK_DEFAULT_PORT);
+			NetworkClientConnectGame(address, COMPANY_SPECTATOR);
 		}
 		/* Singleplayer */
 		StateGameLoop();