Re: [Qemu-devel] [ipxe-devel] [PATCH ipxe] build: Enable IPv6 for qemu

[Michael Brown]

On 26/01/16 14:21, Gerd Hoffmann wrote:
> > A fedora user requested it here:
> > https://bugzilla.redhat.com/show_bug.cgi?id=1280318
>
> Ping?
>
> What is the reason for ipv6 not being enabled by default?
> Just historical?
> Rarely used in practice?
> ROM image size issues?
> Stability concerns?
>
>  From qemu point of view this change is fine.
> ROM becomes slightly larger (~15k), but that isn't a problem.

ROM image size concerns.

I've been thinking for some time now that it would be useful to have a 
"minimal" configuration used for building real BIOS option ROM images 
and a "normal" configuration for everything else (undionly.kpxe, 
ipxe.efi, UEFI ROMs, qemu ROMs, etc).  There are several features that 
are sufficiently commonly used that it would be worth having them 
generally available in the default binaries, but which are currently 
disabled by default due to BIOS ROM size concerns.

We already have the named config mechanism.  I wonder if building a BIOS 
option ROM for a real NIC is sufficiently specialised that it would make 
sense to have a CONFIG=rom or CONFIG=minimal named configuration.

Thoughts from anyone?

Michael