[uml-user] ipv6 config on guest UML

[Matt D. <zen...@gm...>]

Hi All,

I'd like to play with ipv6 on my guest UMLs.  I have a native /64 from
my ISP.  Setting up IPv4 is pretty straight forward.  On the host
server:

    echo 1 > /proc/sys/net/ipv4/ip_forward
    route add -host 192.168.0.253 dev tap0
    echo 1 > /proc/sys/net/ipv4/conf/tap0/proxy_arp
    arp -Ds 192.168.0.253 eth0 pub

Then pass the tap device to the guest UML via eth0=tuntap,tap0

Is there an equivalent for this for IPv6?  I'm trying various things,
but I'm unable to route traffic to the guest UMLs.
This is how I thought it should work.  On the host server:

    echo 1 >/proc/sys/net/ipv6/conf/all/forwarding
    ip -6 addr add 2001:YYY:XXX:c::100/64 dev tap0
    ip -6 route add 2001:YYY:XXX:c::100 dev tap0

But pings to 2001:YYY:XXX:c::100 go nowhere.  Any ideas would be much
appreciated.