[rbak-nsp] Received LCP confreq from remote peer after LCP was up

[Jim]

Hi,

I have a number of users delivered to our LNS via L2TP which appear to 
have unstable connections and I'm seeing the following message in the 
Radius Stop record:

"Received LCP confreq from remote peer after LCP was up"

What would be causing these clients to send these LCP requests after the 
connection has already been established, often for many 
minutes/hours/days prior to this?

Thanks.

Jim.