netifd: Apply tunnel MTU

[project/netifd.git] / system-linux.c

diff --git a/system-linux.c b/system-linux.c
index d01d7e3..58210a6 100644 (file)
--- a/system-linux.c
+++ b/system-linux.c
@@ -1435,8 +1435,11 @@ int system_add_ip_tunnel(const char *name, struct blob_attr *attr)
        str = blobmsg_data(cur);
 
        unsigned int ttl = 0;
-       if ((cur = tb[TUNNEL_ATTR_TTL]) && (ttl = blobmsg_get_u32(cur)) > 255)
-               return -EINVAL;
+       if ((cur = tb[TUNNEL_ATTR_TTL])) {
+               ttl = blobmsg_get_u32(cur);
+               if (ttl > 255)
+                       return -EINVAL;
+       }
 
        unsigned int link = 0;
        if ((cur = tb[TUNNEL_ATTR_LINK])) {