BGP routemaps - Import ipv6 default route

[Guillaume_Bilic]

Hi all,

I'm configuring import routemaps for my external bgp peering on an R77.30 cluster.

I can't find the syntax to match ipv6 default route advertised by remote peer. I tried 

 set routemap def_routes id 20 match network ::/0 exact
RTGRTG0019  Routemap: Invalid dest/masklen ::/0

and the expanded version full of zeros, same result.

But actually :

 set routemap def_routes id 20 match network ::/16 exact

is accepted.

Thank you for your help.

Guillaume