Enabling accounting on Freeradius 3.0.15

[Alan Buxey]

what you log will be dependent on what info you sent back to the NAS
on the access-accept, what the NAS can send in accounting and what
stage the
AAA is at - at the auth stage you wont have an IP address of the
client device - that'll come through after they've received an address
via DHCP/SLAAC etc
and the NAS has sent an interim-update - the user-name will depend on
what was sent back in access accept and what the NAS decides to do -
you'll otherwise
have just the outerID as the user-name (and logs filled with lots of
'anonymous at realm' entries

linelog is a trivial way - just look at linelog module and see the
calls for accounting...and then just enable the linelog in the
accounting section of the outer server
alternatively, go for SQL - enable the detail SQL module and call it
in the accounting section - for performance you probably DONT want
this to be syncronous
so use the buffered-sql virtual server to create a file which then
gets slurped into SQL when theres resources (async).

alan