* implemented per CTRL mppe config
* implemented vendor/attr options to specify which radius attribute containes ip pool name
* implemented adaptive lcp echo functionality
* implemented leaf qdisc attachment (only sfq at present)
* implemented Challenge attribute handling (l2tp)
* implemented unit(interface) cache
* fixed ip-pre-up script result handling
* fixed time range start detection on startup/config reload
* fixed reading of req-limit option (radius)
* fixed unexpected radattr file removal

* fixed ip-down segfault

* implemented logwtmp module
* implemented connlimit module
* implemented advanced shaper
* implemented MS-Primary-DNS-Server/MS-Secondary-DNS-Server attributes
* fix per-interface PADI limiting (pppoe)
* fix module load order
* fix "show sessions match" (cli)
* other bugfixes and improvements

* implemented named IP pools (radius Framed-Pool attribute)
* implemented logging to system logger (log_syslog)
* implemented ability to send cli commands via snmp
* implemented PADI limiting (pppoe)
* implemented simultaneous radius requests limiting
* various bug fixes and improvements

* implemented SNMP support (using net-snmp AgentX)
* implemented multiple radius servers support
* implemented IPv6:
  - PPP IPV6CP protocol
  - Neighbor Discovery protocol in part of Router Advertisement
  - DHCPv6 server including Prefix Delegation extension
  - ipv6-pool module
  - Radius Framed-Interface-Id, Framed-IPv6-Prefix, Delegated-IPv6-Prefix attributes
* fixed MPPE handling
* implemented noauth mode (login without authentication)
* improved CCP/IPCP handling
* included builtin crypto library (optional)
* improved l2tp handling
* fixed builtin shaper temporary rate change functionality
* various bug fixes and improvements