BQM stopped working

I set BQM up on my line yesterday and it was monitoring fine all night but this morning at around 7:50am it stopped working, got pure red packet loss.

Checked the IP and it hasn't changed so the line hasn't dropped.

The firewall on my HG612 hasn't changed by the looks.

What router, and has it been updated or reset, resetting the ping response to disabled?

I disabled the firewall on the HG612 yesterday.

I didn't touch the firewall on my Home Hub 5 as I thought BQM would have ping'd the HG612 not the HH5.

If you're using a HG612 and a HH5, then most likely the HG612 is operating as a bridge. The connection terminates on the HH5, which is the device that will/should be responding to pings.
But, I thought all HH's didn't respond to ICMP and there was no way to enable it?

I think you had the HG612 responding to pings. Why the BQM kept getting a response until today is interesting. Has your sync changed, even though your IP address hasn't?

Did you reboot the HG612 after you disabled the firewall?

I didn't reboot the HG612 no but the ping responses started working straight after I disabled it.

Can't check the sync today as I'm at work so will report back later.

I wouldn't expect BT to issue me with the same IP though.

I'm not too sure, the HG612 is simply a modem. NAT, DHCP, Firewall and QOS are all disabled.

It does indeed look like the HH5 is blocking the ICMP request, the firewall log is full of them.

Is there any way around this? I thought it would ping the HG612 not the HH5.

If running in bridge mode, the IP layer is only visible to the HH5, since the PPPoE is initiated by the HH5

Is there a reason why the BQM was working fine up until 7:50am?

Or was the HH5 firewall just being lazy?