diff --git a/docs/openttd.6 b/docs/openttd.6
--- a/docs/openttd.6
+++ b/docs/openttd.6
@@ -16,7 +16,6 @@
 .Op Fl g Op Ar savegame
 .Op Fl G Ar seed
 .Op Fl I Ar graphicsset
-.Op Fl l Ar host Ns Op : Ns Ar port
 .Op Fl m Ar driver
 .Op Fl M Ar musicset
 .Op Fl n Ar host Ns Oo : Ns Ar port Oc Ns Op # Ns Ar company
@@ -82,9 +81,6 @@ Select the graphics set
 see
 .Fl h
 for a full list.
-.It Fl l Ar host Ns Op : Ns Ar port
-Redirect debug output; see
-.Fl d .
 .It Fl m Ar driver
 Select the music driver
 .Ar driver ;
diff --git a/src/debug.cpp b/src/debug.cpp
--- a/src/debug.cpp
+++ b/src/debug.cpp
@@ -22,7 +22,6 @@
 #include "3rdparty/fmt/chrono.h"
 
 #include "network/network_admin.h"
-SOCKET _debug_socket = INVALID_SOCKET;
 
 #include "safeguards.h"
 
@@ -111,18 +110,6 @@ void DumpDebugFacilityNames(std::back_in
  */
 void DebugPrint(const char *level, const std::string &message)
 {
-	if (_debug_socket != INVALID_SOCKET) {
-		std::string msg = fmt::format("{}dbg: [{}] {}\n", GetLogPrefix(), level, message);
-
-		/* Prevent sending a message concurrently, as that might cause interleaved messages. */
-		static std::mutex _debug_socket_mutex;
-		std::lock_guard<std::mutex> lock(_debug_socket_mutex);
-
-		/* Sending out an error when this fails would be nice, however... the error
-		 * would have to be send over this failing socket which won't work. */
-		send(_debug_socket, msg.c_str(), (int)msg.size(), 0);
-		return;
-	}
 	if (strcmp(level, "desync") == 0) {
 		static FILE *f = FioFOpenFile("commands-out.log", "wb", AUTOSAVE_DIR);
 		if (f == nullptr) return;
diff --git a/src/network/core/config.h b/src/network/core/config.h
--- a/src/network/core/config.h
+++ b/src/network/core/config.h
@@ -24,7 +24,6 @@ static const uint16_t NETWORK_TURN_SERVE
 static const uint16_t NETWORK_CONTENT_SERVER_PORT     = 3978;           ///< The default port of the content server (TCP)
 static const uint16_t NETWORK_DEFAULT_PORT            = 3979;           ///< The default port of the game server (TCP & UDP)
 static const uint16_t NETWORK_ADMIN_PORT              = 3977;           ///< The default port for admin network
-static const uint16_t NETWORK_DEFAULT_DEBUGLOG_PORT   = 3982;           ///< The default port debug-log is sent to (TCP)
 
 static const uint16_t UDP_MTU                         = 1460;           ///< Number of bytes we can pack in a single UDP packet
 
diff --git a/src/network/network.cpp b/src/network/network.cpp
--- a/src/network/network.cpp
+++ b/src/network/network.cpp
@@ -1218,32 +1218,6 @@ static void NetworkGenerateServerId()
 	_settings_client.network.network_id = GenerateUid("OpenTTD Server ID");
 }
 
-class TCPNetworkDebugConnecter : TCPConnecter {
-private:
-	std::string connection_string;
-
-public:
-	TCPNetworkDebugConnecter(const std::string &connection_string) : TCPConnecter(connection_string, NETWORK_DEFAULT_DEBUGLOG_PORT), connection_string(connection_string) {}
-
-	void OnFailure() override
-	{
-		Debug(net, 0, "Failed to open connection to {} for redirecting Debug()", this->connection_string);
-	}
-
-	void OnConnect(SOCKET s) override
-	{
-		Debug(net, 3, "Redirecting Debug() to {}", this->connection_string);
-
-		extern SOCKET _debug_socket;
-		_debug_socket = s;
-	}
-};
-
-void NetworkStartDebugLog(const std::string &connection_string)
-{
-	new TCPNetworkDebugConnecter(connection_string);
-}
-
 /** This tries to launch the network for a given OS */
 void NetworkStartUp()
 {
diff --git a/src/network/network_func.h b/src/network/network_func.h
--- a/src/network/network_func.h
+++ b/src/network/network_func.h
@@ -47,7 +47,6 @@ void NetworkDisconnect(bool close_admins
 void NetworkGameLoop();
 void NetworkBackgroundLoop();
 std::string_view ParseFullConnectionString(const std::string &connection_string, uint16_t &port, CompanyID *company_id = nullptr);
-void NetworkStartDebugLog(const std::string &connection_string);
 void NetworkPopulateCompanyStats(NetworkCompanyStats *stats);
 
 void NetworkUpdateClientInfo(ClientID client_id);
diff --git a/src/openttd.cpp b/src/openttd.cpp
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -169,7 +169,6 @@ static void ShowHelp()
 		"  -p password         = Password to join server\n"
 		"  -P password         = Password to join company\n"
 		"  -D [host][:port]    = Start dedicated server\n"
-		"  -l host[:port]      = Redirect Debug()\n"
 #if !defined(_WIN32)
 		"  -f                  = Fork into the background (dedicated only)\n"
 #endif
@@ -489,7 +488,6 @@ static const OptionData _options[] = {
 	 GETOPT_SHORT_VALUE('b'),
 	GETOPT_SHORT_OPTVAL('D'),
 	 GETOPT_SHORT_VALUE('n'),
-	 GETOPT_SHORT_VALUE('l'),
 	 GETOPT_SHORT_VALUE('p'),
 	 GETOPT_SHORT_VALUE('P'),
 #if !defined(_WIN32)
@@ -528,7 +526,6 @@ int openttd_main(int argc, char *argv[])
 	Dimension resolution = {0, 0};
 	std::unique_ptr<AfterNewGRFScan> scanner(new AfterNewGRFScan());
 	bool dedicated = false;
-	char *debuglog_conn = nullptr;
 	bool only_local_path = false;
 
 	extern bool _dedicated_forks;
@@ -565,9 +562,6 @@ int openttd_main(int argc, char *argv[])
 		case 'n':
 			scanner->connection_string = mgo.opt; // host:port#company parameter
 			break;
-		case 'l':
-			debuglog_conn = mgo.opt;
-			break;
 		case 'p':
 			scanner->join_server_password = mgo.opt;
 			break;
@@ -762,10 +756,6 @@ int openttd_main(int argc, char *argv[])
 
 	NetworkStartUp(); // initialize network-core
 
-	if (debuglog_conn != nullptr && _network_available) {
-		NetworkStartDebugLog(debuglog_conn);
-	}
-
 	if (!HandleBootstrap()) {
 		ShutdownGame();
 		return ret;