🚀 go-pugleaf

I have defined two ciscos (8.1(14)) each with bridging between the
the two of them as well as routing.  I have two parallel 19.2kb lines
between the two of them defined in a circuit group so as to perform
load balancing.  I open a LAT connection from a Decserver 200 over to
a Vaxstation 3100 and start typing a file.  The output is all being bridged.
When I remove one of the lines physically from the router, the connection
dies between the Decserver and the Vaxstation.  This does not happen
when I do a connect from one Vax station to another (using routing rather
than bridging) and removing one of the cables (physically).
 
If I do not have the 2 lines defined as a circuit group then the connection
does immediately.  If it is defined within a circuit group, the connection
can either disconnect immediately if the line I disconnect is the line
that is being transmitted on or it can disconnect in 10-15 seconds if
the line I am transmitting on (serial 0) is still connected but the
bridge at the other side is transmitting on serial 1 which is now
disconnected.
 
It may just be that I am don't understand circuit load balancing enough
but I think this is a bug.  Anyone seen this?
 
Thanks,
Hank