diff -up openssh-8.7p1/ssh.c.xxx openssh-8.7p1/ssh.c

--- openssh-8.7p1/ssh.c.xxx	2024-09-11 14:24:06.711088878 +0200

+++ openssh-8.7p1/ssh.c	2024-09-11 14:35:12.883765718 +0200

@@ -175,6 +175,16 @@ extern int muxserver_sock;

 extern u_int muxclient_command;

 /* Prints a help message to the user.  This function never returns. */

+static void

+redhat_usage(void)

+{

+    if(isatty(fileno(stderr))) {

+	fprintf(stderr,

+"\nYou can find some explanations for typical errors at this link:\n"

+"	    https://red.ht/support_rhel_ssh\n"

+	);

+    }

+}

 static void

 usage(void)

@@ -188,6 +196,7 @@ usage(void)

 "           destination [command [argument ...]]\n"

 "       ssh [-Q query_option]\n"

 	);

+	redhat_usage();

 	exit(255);

 }

@@ -1609,8 +1618,10 @@ main(int ac, char **av)

 	/* Open a connection to the remote host. */

 	if (ssh_connect(ssh, host, options.host_arg, addrs, &hostaddr,

 	    options.port, options.connection_attempts,

-	    &timeout_ms, options.tcp_keep_alive) != 0)

+	    &timeout_ms, options.tcp_keep_alive) != 0) {

+		redhat_usage();

 		exit(255);

+	}

 	if (addrs != NULL)

 		freeaddrinfo(addrs);