pub fn ingress_nat_nat_icmp_v4() -> Table<2usize, Arc<dyn Fn(&mut headers_t, &mut ingress_metadata_t, &mut egress_metadata_t, &Checksum)>>pub fn ingress_nat_nat_icmp_v4() -> Table<2usize, Arc<dyn Fn(&mut headers_t, &mut ingress_metadata_t, &mut egress_metadata_t, &Checksum)>>