Granted, but what I was questioning was why it should have any relevance for selecting between modem+separate router or combined router/modem provided that the functionality is supported.

I too saw an enormous improvement on stability when g.inp was enabled on my local cabinet, and I have a combined modem/router.

In reply to a post by caffn8me:

Conditionally approved devices are; ... and the Zyxel VMG1312.

I think that has probably been approved, as it is now AAISP's standard issue.

My last information on approved devices was from September. Zen was using the Technicolor routers without them having been approved so the fact an ISP uses a router doesn't guarantee it's been approved yet.