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Hi guys,
Just push to the git repo a new branch called 1.2.0. It extend VRRP
framework to support IPv6 operations.
While using VRRP in an IPv6 environement, ones can specify IPv4 and/or
IPv6 VRRP VIPs. You can also choose to use VRRP signalization protocol
plane to v4 or v6.
It would be nice if some users can give it a try and provide feedbacks.
Next step in my IPv6 duty, will be to add support to IPVS IPv6 framework
through generic netlink channel (well: when I will find out time since
this done during spare time).
ChangeLog for this brand new release looks like :
2010-05-31 Alexandre Cassen <acassen@xxxxxxxxxxxx>
* Branch 1.2.0 created. This branch will host all new
developments on Keepalived. New code will be added
in here only.
* VRRP : Add support to IPv6 protocol. The global framework
has been extended to support this branch new family !
* VRRP : Implement IPv6 Neighbour Discovery protocol (NDISC).
In IPv6 gratuitous ARP doesnt exist since ARP is IPv4 only.
NDISC can provide the same feature by sending so called
Unsolicited Neighbour Advertisement. A node can send such a
protocol datagram in order to (unreliable) propagate new
information quickly (rfc4861.4.4). NDISC build an ICMPv6
message with taget link-layer address option, this option is
set icmp6_override flag to indicate that advertisement should
override an existing cache entry and update the cached
link-layer.
* VRRP : Extend ip address framework to be IPv4 and IPv6
independant. An ip address, as defined in framework, is
now {IPv4,broadcast} or {IPv6}. Use struct ifaddrmsg to
store and prepare netlink related operation. This clean-
-up the code.
* VRRP : Extend parser to support IPv6 declarations. IPv6
and IPv4 addresses can be configured inside the same
configuration block (eg: virtual_ipaddress or
virtual_ipaddress_excluded). An instance can run IPv4 and
IPv6 addresses at a time, this can be useful in dual-stack
env (since this will become certainly the most common use
case in the next years).
* VRRP : Extend netlink framwork to support IPv6 addresses
interactions (reflection/addition/deletion).
* VRRP : Extend finite state machine support IPv4 & IPv6
at a time.
* VRRP : Extend protocol helpers to support IPv6 multicast
related. AF_INET6 SOCK_RAW tweaking it done through
socket API instead of PF_PACKET header building... This
makes code cleaner.
* VRRP : Set default VRRP instance protocol to be IPv4.
you can use configuration keyword "native_ipv6" inside
vrrp_instance configuration block to specify that you
want to use IPv6 for VRRP multicasting protocol instead.
* VRRP : Extend socket option related helpers to support
IPv6 specifics.
* VRRP : Extend protocol scheduler and dispatcher to
support IPv6.
* VRRP : Extend socket pool to keep track of socket
family.
* VRRP : Cleanup protocol offset pointer by removing
duplication code...
* VRRP : some code clean-up...
Cheers,
Alexandre
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