[libvirt] [Spice-devel] RFC: spice-server default listen behaviour change

[David Jaša]

(I missed engine-devel@ previously because of typo :()

just two additions I missed yesterday:

David Jaša píše v Čt 14. 06. 2012 v 17:32 +0200:
> Hi,
> 
> I learned few things about ipv6 lately. Most importantly about
> dual-socket that means that a process that opens ::0 automatically
> listens on both ipv4 _and_ ipv6 unless it sets IPV6_ONLY option of
> setsockopt() to 0.
> 
> This is pretty important wrt dual-stack configurations because they can
> be implemented with just slight changes to spice server (unlike the old
> RFE requesting listening on multiple addresses):
> 
> * when no addr= or ipvx options are set, listen on ::0
> 
> * when ipv4 and no addr= option is set, listen on 0.0.0.0
> 
> * when ipv6 is set, set IPV6_ONLY to 1 to make sure that spice server
> won't listen on ipv4
> 
> * when conflicting ipvx and addr= options are set, error out (this
> already works fine)
> 

* new spice-server feature: add option to bind to a selected interface
regardless of its addresses

> This will affect upper layers though, given bugs like
> https://bugzilla.redhat.com/show_bug.cgi?id=832121 , but it seems to me
> like the step in the right direction. Any thoughts/comments before I
> file this as a bug?

oVirt could leverage the last bullet to add dual-stack support pretty
much transparently if the display network is defined by dns name. Is
there an interest in this?

> 
> David
> 

-- 

David Jaša, RHCE

SPICE QE based in Brno
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