Warn when both local and remote addresses are of the same type. Updat…

…e changelog.

6tunnel.c

@@ -648,7 +648,7 @@ int main(int argc, char **argv)
 				pid_file = optarg;
 				break;
 			case 'H':
-				fprintf(stderr, "%s: -H is deprecated, please use proper combination of -4 and -6.\n", argv[0]);
+				fprintf(stderr, "%s: warning: -H is deprecated, please use proper combination of -4 and -6.\n", argv[0]);
 				break;
 			default:
 				return 1;
@@ -705,6 +705,12 @@ int main(int argc, char **argv)
 		source_hint = remote_hint[0];
 	}
 
+	if (source_hint == AF_INET && local_hint == AF_INET)
+		fprintf(stderr, "%s: warning: both local and remote addresses are IPv4\n", argv[0]);
+
+	if (source_hint == AF_INET6 && local_hint == AF_INET6)
+		fprintf(stderr, "%s: warning: both local and remote addresses are IPv6\n", argv[0]);
+
 	tmp = xntop(ai->ai_addr);
 	debug("resolved to %s\n", tmp);
 	free(tmp);

ChangeLog

@@ -1,3 +1,14 @@
+0.12 (2016-10-24)
+
+Changes by Wojtek Kaniewski <[email protected]>:
+- make -4 and -6 work the way they were intended,
+- remove -H option, but leave enough information for the users to get the
+  same result,
+- warn when both local and remote address are of the same type.
+
+Changes by Jari Aalto <[email protected]>:
+- spelling fixes.
+
 0.11 (2016-02-26)
 
 Changes by Wojtek Kaniewski <[email protected]>: