wireproxy listen a random udp port

[kousyougi]

[Interface] Address = PrivateKey = DNS = 1.1.1.1

[Peer] PublicKey = Endpoint =

[Socks5] BindAddress = 0.0.0.0:8080

I only listen one port for socks5 But when I check "netstat -tulpn" There are random udp port listening for example: udp 0 0 0.0.0.0:35328 0.0.0.0:* 17632/wireproxy udp 0 0 :::35328 :::* 17632/wireproxy

What do these udp port listen for ?

Thanks

[fmierlo]

This is the wireguard port.