Update mud

src/main.c

@@ -252,7 +252,11 @@ int main (int argc, char **argv)
     long time_tolerance = 0;
 
     int v4 = 1;
-    int v6 = 1;
+    int v6 = 0;
+
+#ifdef __linux__
+    v6 = 1;
+#endif
 
     struct option opts[] = {
         { "host",           &host,           option_str    },
@@ -268,6 +272,7 @@ int main (int argc, char **argv)
         { "time-tolerance", &time_tolerance, option_long   },
         { "v4only",         NULL,            option_option },
         { "v6only",         NULL,            option_option },
+        { "chacha20",       NULL,            option_option },
         { "version",        NULL,            option_option },
         { NULL },
     };
@@ -280,13 +285,18 @@ int main (int argc, char **argv)
         return 0;
     }
 
-    if (option_is_set(opts, "v4only"))
+    if (option_is_set(opts, "v4only")) {
+        v4 = 1;
         v6 = 0;
+    }
 
-    if (option_is_set(opts, "v6only"))
+    if (option_is_set(opts, "v6only")) {
         v4 = 0;
+        v6 = 1;
+    }
 
-    if (!v4 && !v6) {
+    if (option_is_set(opts, "v4only") &&
+        option_is_set(opts, "v6only")) {
         gt_log("v4only and v6only are both set\n");
         return 1;
     }
@@ -317,7 +327,9 @@ int main (int argc, char **argv)
 
     fd_set_nonblock(tun_fd);
 
-    struct mud *mud = mud_create(bind_port, v4, v6);
+    int chacha = option_is_set(opts, "chacha20");
+
+    struct mud *mud = mud_create(bind_port, v4, v6, !chacha);
 
     if (!mud) {
         gt_log("couldn't create mud\n");