example function to use mac address as username:
function username(ses)
    return ses:hwaddr()
end

The 'username' variable can be freed at the beginning of the function.
We have to use ppp->ses.username instead.
Signed-off-by: NGuillaume Nault <g.nault@alphalink.fr>

 After session is freed on our end, kernel doesn't bother with possible
 incoming data packets and just passes them to userspace, in turn
 they are mistreated as short control packets with corresponding errors.
 Since there's no special data packet handling, just ignore them.

 non-/64 subnets still needs Router Advertimenets for the
 default route & RDNSS.

Assign opt82_ses=ses if shared=0

1 - is high priority queue for Access-Request and Account-Request(Start)
2 - is low priority queue for Account-Request(Alive) and Account-Request(Stop)
This patch intended to prioritize sessions connecting requests over disconnects and interim updates.

* ipoe: assign point-to-point addresses to non-shared physical interface (prevents route cleaning by interface renaming)
* ipoe: lua: add "vlan" field to session object
* ipoe: fixed prefix calculation from ipaddr
* ipoe: implemented ability to change ipset by CoA
* ipoe: included lua bitop library
* ipoe: implemented support for vendor specific attrbiutes
* ipoe: add client ip as route when nat=1
* shaper: fixed conditions to install limiter (may install only up or only down limiter)
* shaper: fixed bug in class id allocation procedure
* cmake: check for pcre and openssl headers are present
* implemented session count limiting
* support for openssl-1.1
* fixed connection problem with clients having nomru option

Fixed problem while connecting with clients in which mru not
negotiating lcp option is set

introduced new config option:
[ipoe]
vendor=Name

this affects to all attributes specified in attr-xxx options

new config option:
[common]
max-sessions=N

If set then accel-pppd stops reply to new connection requests if total number of sessions (active and starting) is reached specified limit.

This reverts commit e3fc927e.

this is related only for htb

new config option:
[common]
max-sessions=N

If set then accel-pppd stops reply to new connection requests if total number of sessions (active and starting) is reached specified limit.

Included bitop library http://bitop.luajit.org/index.html
It may be used to extract vlan components in username function:
function username(ses)
  vid=ses:vlan()
  svid=bit.rshift(vid,16)
  cvid=bit.band(vid,0xffff)
  ...
end

For this need to send 2 attributes: L4-Redirect=1,L4-Redirect-Ipset=new-set