[nsp] traffic/accouting via snmp for virtual-access users on 3640

[sthaug at nethelp.no]

> Now the interesting question: do you have consistently high bits/sec.
> values, or is this only short peaks when the 32bit byte-counter wraps
> around?  The latter one would be "my old bug", the former effect would
> be new indeed.

It is consistently a couple of orders of magnitude too big (but clearly
not an exact multiple, eg. 128 or 256, of the real traffic).

In this case, only the "show int" counters are wrong, the SNMP counters
(I've only checked the 64 bit counters so far) show sensible values.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no