![](/images/new-backgrounds/1267784/267784109x1.webp)
Secondary DNS servers manually.
Discard Ping on WAN Place a check to Enable or Disable ping from WAN.
Accept / CancelPress Accept to confirm the changes or Cancel to return previous settings.
Accept does not apply the changes – you must go to Status
If the router's MTU is set too high, downstream packets will be fragmented. If
the router's MTU is set too low, the router will fragment packets unnecessarily and, in extreme cases, may be unable to establish connections. In either case, network performance can suffer.