chap-secrets: allow to use pool name instead of address to specify ipv4 pool

 Chap-secrets' ipdb uses 4th field as static peer ipv4 address. With no radius
 and multiple same username sessions, it's impossible to use non-default pool
 for such sessions.
 Abuse chap-secret's 4th field as pool=name to specify session's pool name.
 With ippool module loaded after chap-secrets (default order), it will be
 used for allocation from the specified poll name.

 Compatibility considerations:
 * pppd will skip 'pool=*' with warn 'unknown host in auth. address list'
   same as 5th field - shaper, because starting from 4th field pppd
   parse list of value. so, no new effects here.
 * previous versions of accel-ppp will parse 'pool=*' as empty address.
 * with no 'pool=*' in chap-secrets or with no chap-secrets loaded, no
   behavior change.
 * with no ippool loaded, session will get no peer address.
 * with ippool loaded before chap-secrets, chap-secrets's ipdb will not
   be used, therefore neither ip addess not pool name will has no effect.
 * if chap-secrets' pool is invalid or not found, default pool will be
   used by ippool or address came from radius.
 * chap-secret's pool name might override pool came from radius, if
   radius module is loaded after chap-secrets and no address came from
   radius.

0 files changed, 0 insertions, 0 deletions