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 +175,14 @@ 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)
+{
+	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);