Just letting you know its works on the FRITZ!Box 4040 Router.
This device is a router only so it has no modem in it, this gets connected via the WAN Port on my ONT.
As to setting it up to work with BQM, all I did was disable all the stuff that I didn't want like WPS and Fritz related stuff.
Out of the box it allows and responds to ICMP packets / messages.
Also if it was at all possible can we have a way to change the actual IP the BQM is pinging, having to disable and remove then recreate with a new IP isn't that hard to do, but due to the way the forums work, it would result in all old posts having invalid links.
And by having a way to change the IP when it gets changed without changing the long hash type file name would be great.