diff --git a/tncattach.c b/tncattach.c
index 6aa12f1..582c4a4 100644
--- a/tncattach.c
+++ b/tncattach.c
@@ -332,7 +332,7 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state) {
                 argp_usage(state);
             }
 
-            if(arguments->set_ipv6 || arguments->link_local_v6)
+            if((arguments->set_ipv6 || arguments->link_local_v6) && arguments->mtu < 1280)
             {
                 printf("IPv6 and/or link-loal IPv6 was requested, but the MTU provided is lower than 1280\n");
                 exit(EXIT_FAILURE);
@@ -705,4 +705,4 @@ int main(int argc, char **argv) {
     read_loop();
 
     return 0;
-}
\ No newline at end of file
+}