[RFC] Change default ipv6 network from fec0/10 (site local) to fe80/10 (link local)

Philippe Mathieu-Daudé philmd at redhat.com
Wed Jan 27 21:46:13 UTC 2021

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...

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