Link Quality Monitoring support?

I'm trying to figure out a way to monitor the quality of our ppp links. It would seem that RFC1989 would provide a perfect way to do it, but it does not appear that pppd 2.4.3 supports it.

I see in the TODO file that link quality monitoring is listed and I do see a _bit_ of code regarding it in the source.

So a couple questions--

Any timeframe on this being implemented in pppd? Next release? Two years from now?

How are the rest of you currently accomplishing similar monitoring? I have considered writing a small daemon that pings each connection in some sort of efficient way and keeps track of average packet loss. Perhaps there's a more elegant solution already out there.

Thanks for any feedback on this...
Ray