:input;type filter hook input priority 0 *inet;test-inet;input ip protocol icmp icmp type echo-request;ok;icmp type echo-request icmp type echo-request;ok;meta nfproto ipv4 meta l4proto 1 icmp type echo-request ip6 nexthdr icmpv6 icmpv6 type echo-request;ok;icmpv6 type echo-request icmpv6 type echo-request;ok;meta nfproto ipv6 meta l4proto 58 icmpv6 type echo-request