L2TP VPN to pass only 5060 traffic

RouterOS General
1

Hello,

I have an L2TP Server. How do I configure it to only pass 5060 (VOIP) traffic over VPN, and ignore all other traffic?
Is this even possible?

2

create a mangle rule
preroute destination port 5060, action mark routing, l2tpvpn
then add a static route that points to l2tp interface with routing mark l2tpvpn