Dual WAN (DHCP and static) and IPTV difficulties

Hey guys

I’m really a newbie with router OS. I have two WAN connections. One connection has a dynamic DHCP Address and the other one a static.
I don’t need load balancing or failover.

The second WAN (static) is my business line that has a IPsec tunnel on it and some NAT services.
The other WAN (dynamic) is a fiber connection with IPTV witch is must fast. It’s my regular internet line.
I’ve read the Wikis her and what I’ve figured out is, that I have to track the packets with the mangle function.

[code]/ip firewall mangle
add chain=input in-interface=WAN1 action=mark-connection new-connection-mark=WAN1_conn
add chain=input in-interface=WAN2 action=mark-connection new-connection-mark=WAN2_conn

add chain=output connection-mark=WAN1_conn action=mark-routing new-routing-mark=to_WAN1
add chain=output connection-mark=WAN2_conn action=mark-routing new-routing-mark=to_WAN2[/code]

That’s not that difficult, but the problem is to set the routing marks at the routes. My problem is, that I can’t do set a routing mark on the DHCP WAN port. This rout has added automatically, and that’s also right because its DHCP.

/ip route
add dst-address=0.0.0.0/0 gateway=2.2.2.1 routing-mark=to_WAN1 check-gateway=ping
add dst-address=0.0.0.0/0 gateway=3.3.3.1 routing-mark=to_WAN2 check-gateway=ping

Are you agreeing that I have to deal with Mangle and any idea how I can solve the problem with the routes?

The other question is, what do I have to do, that IPTV (Multicast) works? I’ve already set an IGMP Proxy and the UDP filters. Everything works fine, as long as I don’t change anything at the routes. I guess I have to set a route that the multicast traffic is only go to the DHCP WAN interface.
I’m really not a networking engineer and it would be nice if someone could help me here. I hope there is an solution for the problem.

under IP > DHCP client set Add Default Route to NO and default route wont be added.

I’ve set up IPTV once and all I’ve done was port forwarding from public to internal IP address.

that’s not realy the solution. How I can set an static route if my WAN IP is dynamic? Dynamic means also the gateway is dynamic. So tell me how should I set a route?!