2004-02-11 Hasso Tepper <hasso@estpak.ee>
  * many *.c files: Replace thread_add_xxx() and thread_cancel() with
    THREAD_XXX_ON and THREAD_XXX_OFF macros.

2004-01-27 Hasso Tepper <hasso@estpak.ee>
  * isis_circuit.c: Commented out "(no) ip address" commands so it doesn't
    confuse vtysh.

2003-12-31 Hasso Tepper <hasso@estpak.ee>
  * isis_dr.c: Fix some threads related bugs.

2003-12-23 Hasso Tepper <hasso@estpak.ee>
  Some fixes done by me and Cougar <cougar@random.ee>.
  * isis_adjacency.c: Two bugfixes by Cougar:
    After down state neigbour was deleted but not removed from neighbours list.
    Don't show random expire time during neighbour initialisation.
  * isis_circuit.c: Don't show interface addresses in config by Cougar.
  * isis_constants.h, isis_misc.c: Show other well-known NLPID names as well
    by Cougar.
  * isisd.c: Two tiny CLI fixes by me.
  * isis_lsp.c: Bugfix in lsp_print_detail() by Cougar.
    Show IPv4 external and IPv6 TLV's in "show isis database detail" by me.
  * isis_misc.c: Net address format fix by Cougar.
  * isis_spf.c: Dead loop fix in isis_spf_preload_tent() by Cougar
  * isis_zebra.c: Ignore distance when adding route to zebra for now by me.
  * isis_tlv.c: Parse external IPv4 TLV's correctly by me.

Version 0.0.7 to 0.0.8
======================

o A bug in handling of other ISs fragments fixed
o hello interval now specified in *seconds*
o replaced the adj->ipv[46]_addr tables with linked lists

Version 0.0.6 to 0.0.7 (Oct 29 2002)
======================

o changed to zebra-0.93b
o fixed a seg in SPF
o handling/generation of LSP fragments
o domain/area/circuit password

Version 0.0.5 to 0.0.6 (Jul 4 2002)
======================

o lots of changes to SPF
 - runs the SPF for IPv4 and IPv6 separately
 - a number of bugs fixed
 - simplified the implementation 
 - "7.2.7 Removal of excess paths" implemented
o ported to freebsd  (tested in 4.5-STABLE and 4.6-STABLE) 
o moved to zebra-0.93-pre2
o "show isis topology" command added 
o "show (ip|ipv6) route isis commands added to zebra
o a number of fixes and additions (e.g. checksum calculation and DIS state
change event) by BeomSeok Gwak added

Version 0.0.4 to 0.0.5 (Apr 26 2002)
======================

o changed to zebra-0.93-pre1
o number of memory leaks + small bugs fixed
o a bug related to processing of neigbors when installing routes fixed

Version 0.0.3 to 0.0.4 (Feb 27 2002)
======================

o initial version of SPT algorithm
o installing routes though zebrad
o isis debug commands
o work on IS-IS events (e.g. circuit state change)

Version 0.0.2 to 0.0.3 (Jan 17 2002)
======================

o LSP handling improved
o generation of pseudonode LSPs
o DR election enhanced
o support for p2p interfaces
o support for topology simulation 
o more detailed output for show commands

Version 0.0.1 to 0.0.2 (Dec 13 2001)
======================

o circuit state machine (isis_csm.[ch]) added
o lot of work on LSP generation 
o ISO checksum 
o uses DGRAM sockets instead of RAW
o gets IP(v6) addresses from zebra
o debug can be controlled with "debug isis" command
o read support for TE tlvs
o work started on p2p interfaces
o work started on isis events