I think my question is a repeating question here, never mind guys but need to know that. How can I limit udp connections like we done it for tcp connections per IP?
Sorry, i don't use this type of limitation, but go to mangle, chain=prerouting, protocol=udp, action=mark-connection and type a name (ex: udp-clients), then make the same with other rule but with the connection mark in the target and action=mark-packet. In the queue simple or tree use that packet mark to limit the desired traffic. PS: Be careful about udp port 53 (dns), 123 etc.