Firewall/NAT

I Have a Rule in PPTP VPN with pass

Proto Source Port Destination Port Description
   *         *        *           *
When I access to Lan all work fine except the Firewall IP who is blocked for the default Rule

  13:53:02.964216 PPTP 192.168.6.X, port 53 192.168.254.X, port 2463 UDP
  13:53:02.025004 PPTP 192.168.6.X, port 53 192.168.254.X, port 2463 UDP
  13:53:00.162889 PPTP 192.168.6.X, port 53 192.168.254.X, port 2463 UDP

Any suggestion?

Thanks