!impostor and !loopback and
 (outbound and
  udp.PayloadLength>=20 and
  udp.Payload32[1]=0x2112A442 and udp.Payload[0]<0x40 and
  ( ((ip.DstAddr < 127.0.0.1 or ip.DstAddr > 127.255.255.255) and (ip.DstAddr < 10.0.0.0 or ip.DstAddr > 10.255.255.255) and (ip.DstAddr < 192.168.0.0 or ip.DstAddr > 192.168.255.255) and (ip.DstAddr < 172.16.0.0 or ip.DstAddr > 172.31.255.255) and (ip.DstAddr < 169.254.0.0 or ip.DstAddr > 169.254.255.255)) or
     ((ipv6.DstAddr > ::1) and (ipv6.DstAddr < 2001::0 or ipv6.DstAddr >= 2001:1::0) and (ipv6.DstAddr < fc00::0 or ipv6.DstAddr >= fe00::0) and (ipv6.DstAddr < fe80::0 or ipv6.DstAddr >= fec0::0) and (ipv6.DstAddr < ff00::0 or ipv6.DstAddr >= ffff::0))
    )
 )