Re: [Qemu-devel] [PATCH 2/4] sockets: helper functions for qemu.

[Gerd Hoffmann <kraxel@redhat.com>]

Daniel P. Berrange wrote:
> On Tue, Oct 28, 2008 at 03:22:35PM +0100, Gerd Hoffmann wrote:
>> Daniel P. Berrange wrote:
>> Sure?  I've googled a bit on this issue, looked what apache does here.
>> I've figured this can be changed per socket, with a system-wide default
>> configurable via sysctl (and different OSes have different default
>> configs here).
> 
> Ah, I was mis-understanding  what  IPV6_V6ONLY was doing here. If that's
> portable to BSD like OS too, then I reckon that's sufficient and would
> avoid need for separate sockets.

I hope so, but didn't actually test that on something BSDish.  Maybe the
BSD folks on the list can comment/test?

> Uli was demonstrating how to achieve total protocol independance
> in your code. So if someone invents something better even than
> IPv6 your code would still work. If you're happy to limit yourself
> to just IPv4 & IPv6, then the IPV6_V6ONLY trick would work.

Right now there isn't anything else, and I'd prefer to tackle the issue
of other protocols once we have them.  There are also some more ipv4/v6
assumptions in the code, so other protocols wouldn't work out-of-the-box
anyway.

cheers,
  Gerd