This is distrib with some improvments (more are prepared for the next one)
and some bug fixes:

Changes are:

 - router alert should not multiply packets (sys/netinet/ip6_input.c)

 - fix hop-by-hop header processing in forwarding (sys/netinet/ip6_input.c)

 - fix raw_output of small ICMPv6 (sys/netinet/raw_ip6.c)

 - fix shares of IPv6 (m)routed multicast buffer (ttl sticks to 64)
  (sys/netinet/{ip6_output.c,ip6_mroute.c})

 - move to altq-0.4.3 and rsvpd.rel4.2a3

 - fix tug and bti interfaces (sys/netinet/if_{tug,bti}6.c)

 - fix control function for sat interface (/sys/netnatm/natm.c)

 - add an ipv6src argument to ifconfig for bti (IPv4/IPv6) interface
   (sbin/ifconfig/ifconfig.[c8])

 - improve ifconfig manual entry (sbin/ifconfig/ifconfig.8)

 - remove register (bad) declaration (ie let compiler does its job) in
   sys/netinet/{ip6_icmp.c,ip{,6}_input.c,raw_ip6.c,tcp6_input.c,udp6_usrreq.c}
   (in fact gcc on NetBSD i386 seems to have some problems)

 - GRE (RFC 1701) support (from an old SunOS code)
   (sys/conf/files*, sys/netinet/{if_gre.[hc],in_proto.c}, IPv6/confgre.c)

 - add many #ifdef INET6 in sys/{net,netinet} for compilation without INET6

 - fix multiple ancillary data in receive (sys/kern/uipc_syscalls.c)

 - add RECVPKTINFO for IPv4 (test) (sys/netinet/ip_input.c)

 - add an option for manual/automatic address creation in (usr.sbin/) ndpd-host

 - cleanup in (usr.sbin/) ndpd-host/ndpd-router

FreeBSD changes:

 - fix ARP entry overwriting for non-ARP entry by in_addroute
   (sys/netinet/{if_ether.h,if_ether.c,in_rmx.c})

NetBSD changes:

 - fix multiple raw ancillary data (sys/netinet/raw_ip{,6}.c)
   (ifconfig when gated run did a panic receive 1)

 - move -DRPC_USE_INET_ANY to CPPFLAGS (lib/libc/rpc/Makefile.inc)

 - add some IPv6 support for i386 ethernet drivers
   (sys/dev/{ic/dp8390.c,pci/{if_de.c,if_tl.c}})

 - fix sys/netinet/{fil.c,ip_{auth,fil,frag,nat,proxy,state}.c}
   when INET6 option is set

 - fix MROUTING setsockopt (sys/netinet/ip_output.c)

Other stuffs:

Short term planned improvements are:

 - test mMosaic (multicast and IPv6 Mosaic version,
   see ftp://ftp.enst.fr/pub/mbone/mMosaic/)

 - add ATM ILMI and signaling daemons in the distrib

 - function vector for hop-by-hop and destination options

 - merged TCP/IPv4 and TCP/IPv6 code for NetBSD
   (this point and the previous are already done, you can ask us for them)

 - merge ATM pvc and sat drivers

 - fix AMD with IPv6 RPC

 - ECN for IPv6 with new standard API definitions

 - fix RECV/SEND_IF/INTERFACE API inconsistencies

Medium & long term planned improvements are:

 - RSVP/CBQ for IPv6 (finish ALTQ 0.4.3 / RSVP 4.2a3)

 - move to next basic API specs

 - support for security new specs, netkey API

 - BIND 8.1.x with DHCPv6, security and ...

 - IPv6 over ATM (the real thing with SVCs)

 - more of extended API

 - a good way to announce interface changes (mainly address changes)
   to all the stupid tools which need to know (X11, BIND, ...)
   (for BIND in6_pktinfo does the job very well, other common usage
   is (in)security test for internal communications).

