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table inet x {
chain nat_dns_dnstc {
meta l4proto udp redirect to :5300
drop
}
chain nat_dns_this_5301 {
meta l4proto udp redirect to :5301
drop
}
chain nat_dns_saturn_5301 {
meta nfproto ipv4 meta l4proto udp dnat ip to 240.0.1.2:5301
drop
}
chain nat_dns_saturn_5302 {
meta nfproto ipv4 meta l4proto udp dnat ip to 240.0.1.2:5302
drop
}
chain nat_dns_saturn_5303 {
meta nfproto ipv4 meta l4proto udp dnat ip to 240.0.1.2:5303
drop
}
chain nat_dns_acme {
udp length . @th,160,128 vmap { 47-63 . 0xe373135363130333131303735353203 : goto nat_dns_dnstc, 62-78 . 0xe31393032383939353831343037320e : goto nat_dns_this_5301, 62-78 . 0xe31363436323733373931323934300e : goto nat_dns_saturn_5301, 62-78 . 0xe32393535373539353636383732310e : goto nat_dns_saturn_5302, 62-78 . 0xe38353439353637323038363633390e : goto nat_dns_saturn_5303 }
drop
}
}
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