[libvirt] ipv6 slirp network

[Vasiliy Tolstov]

Hello. I have now slirp qemu network with ipv4 address, but for tests
i need also ipv6 addresses in slirp network. How can i provide this
args for qemu via libvirt or (best) via qemu args?
I found some commits about ipv6 slirp network but can't find args
needed to enable it.

-- 
Vasiliy Tolstov,
e-mail: v.tolstov at selfip.ru
jabber: vase at selfip.ru