table netdev x {
	set x {
		typeof vxlan ip saddr . vxlan ip daddr
		elements = { 3.3.3.3 . 4.4.4.4 }
	}

	set y {
		typeof vxlan ip saddr
		size 65535
		flags dynamic
	}

	chain y {
		udp dport 4789 vxlan ip saddr . vxlan ip daddr { 1.1.1.1 . 2.2.2.2 } counter packets 0 bytes 0
		udp dport 4789 vxlan ip saddr . vxlan ip daddr @x counter packets 0 bytes 0
		udp dport 4789 update @y { vxlan ip saddr }
	}
}