Support IPv6

[roeme]

I think we can safely assume that it's about time :)

Referring to https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=529383 , is there a general idea on what needs to be changed, apart from the ip format check? My C is a bit (read: quite) rusty, so I wasn't quite able to infer this from glancing over the code. (Might be also because of the lack of comments, but then again, probably my code monkeying skills).

[pedroapero]

You may use native ifupdown to add some IPv6 support to ucarp. Here is how I do it:

auto eth0
iface eth0 inet static
  address 10.0.0.1
  netmask 255.255.255.0
  ucarp-vid 1
  ucarp-vip 10.0.0.3
  ucarp-password shared_password
  ucarp-master yes

iface eth0:ucarp inet static
  address 10.0.0.3
  netmask 255.255.255.0

iface eth0:ucarp inet6 static
  address AA:AA:AA::01
  netmask 64

The CARP protocol is still performed using IPv4: you need to have a shared IPv4 anyways.

[roeme]

This issue is not about bringing IPv6 addresses up/down, but using ucarp within an IPv6-only environment. Last time I checked, while there is already quite a bit of ifndef'ed INET6 socket code, some is still missing.

[mdsalman729]

Is Ipv6 supported with ucarp now?

[jedisct1]

Nope.

[mdsalman729]

Have there been any efforts towards porting? I am stuck at implementing the neighbor discovery.
Looks like there is no netinet6 library support on linux. Do you think this is the right approach?

[jedisct1]

Support for IPv6 exists in OpenBSD and has actually been there forever.

I removed it when porting the code as IPv6 wasn't deployed anywhere and to keep things simple. But that part can certainly be ported.

[mdsalman729]

How would you go about porting this? I have looked into it and see two ways. Would you re-implement the neighbor discovery portion completely or would you use the ndisc api which currently exists in centos. I would like to work on this and if it works will contribute back to the repo.

…

On Tue, Jul 18, 2017 at 2:39 PM, Frank Denis ***@***.***> wrote: Support for IPv6 exists in OpenBSD and has actually been there forever. I removed it when porting the code as IPv6 wasn't deployed anywhere and to keep things simple. But that part can certainly be ported. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#10 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AHmAOdcNsu_AWQHw5LcWn_hwoQHQ5y6Oks5sPSYXgaJpZM4Bm8bT> .