* [RFC] Change default ipv6 network from fec0/10 (site local) to fe80/10 (link local)
@ 2021-01-27 19:13 Doug Evans
2021-01-27 21:46 ` Philippe Mathieu-Daudé
0 siblings, 1 reply; 3+ messages in thread
From: Doug Evans @ 2021-01-27 19:13 UTC (permalink / raw)
To: QEMU Developers
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Hi.
This is just an information gathering question. I don't know enough to
formally propose the change.
I happened to notice QEMU's default for the ipv6 network is fec0::/10 which
is deprecated (RFC3879).
I think(!) an obvious replacement is fe80::/10, link local.
Has anyone thought about this issue or know of reasons why we shouldn't
make this change?
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [RFC] Change default ipv6 network from fec0/10 (site local) to fe80/10 (link local)
2021-01-27 19:13 [RFC] Change default ipv6 network from fec0/10 (site local) to fe80/10 (link local) Doug Evans
@ 2021-01-27 21:46 ` Philippe Mathieu-Daudé
2021-01-27 21:55 ` Samuel Thibault
0 siblings, 1 reply; 3+ messages in thread
From: Philippe Mathieu-Daudé @ 2021-01-27 21:46 UTC (permalink / raw)
To: Doug Evans, QEMU Developers
Cc: libvir-list, Samuel Thibault, Jason Wang, Daniel P. Berrange
Hi Doug,
Cc'ing more developers.
On 1/27/21 8:13 PM, Doug Evans wrote:
> Hi.
>
> This is just an information gathering question. I don't know enough to
> formally propose the change.
> I happened to notice QEMU's default for the ipv6 network is fec0::/10
> which is deprecated (RFC3879).
> I think(!) an obvious replacement is fe80::/10, link local.
>
> Has anyone thought about this issue or know of reasons why we shouldn't
> make this change?
I'm a bit worried this could break various scripts and firewall rules
where this is the expected default range...
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [RFC] Change default ipv6 network from fec0/10 (site local) to fe80/10 (link local)
2021-01-27 21:46 ` Philippe Mathieu-Daudé
@ 2021-01-27 21:55 ` Samuel Thibault
0 siblings, 0 replies; 3+ messages in thread
From: Samuel Thibault @ 2021-01-27 21:55 UTC (permalink / raw)
To: Philippe Mathieu-Daudé
Cc: libvir-list, Jason Wang, Daniel P. Berrange, QEMU Developers,
Doug Evans
Hello,
Philippe Mathieu-Daudé, le mer. 27 janv. 2021 22:46:13 +0100, a ecrit:
> On 1/27/21 8:13 PM, Doug Evans wrote:
> > I happened to notice QEMU's default for the ipv6 network is fec0::/10
> > which is deprecated (RFC3879).
> > I think(!) an obvious replacement is fe80::/10, link local.
fe80::/10 is really a different thing, I don't think we want to use it.
We can use some prefix in fc00::/7, such as fd00::/8.
It "just" needs checking with various guest OS, to check that it doesn't
break the default behavior.
Samuel
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-01-27 19:13 [RFC] Change default ipv6 network from fec0/10 (site local) to fe80/10 (link local) Doug Evans
2021-01-27 21:46 ` Philippe Mathieu-Daudé
2021-01-27 21:55 ` Samuel Thibault
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