Always Host for spec-ops

Hello
I'm getting so annoyed that because of my ***** router I can't be the host.. I port forwarded everything etc.
So what I'm asking for is a way to put in commands for spec-ops MW3
Like party_hostmigration 0; party_connecttimeout 1; badhost_endgameifisuck 0
I really need this :$ please help!

Apparently i'm the only one who is searching for this >_<?!

@jorricks
had similar problems. port forwarded, enabled upnp etc no result

just figured out that disabling my av set my nat to open :S

well congratz.. That won't be able for me..