6to4 tunnel not starting up [solved]

Hi,

I have set up new IPv6 tunnel with tunnelbroker today as a replacement for Sixxs.net one:

/interface 6to4 add local-address=nn.nn.nn.nn mtu=1480 name=tunnelbroker remote-address=216.66.86.122

/ipv6 address
add address=2001:470:6e:xxx::2 interface=tunnelbroker
add address=2001:470:6f:xxx:: interface=bridge-local

/ipv6 route
add check-gateway=ping distance=1 gateway=tunnelbroker
add check-gateway=ping distance=1 dst-address=2000::/3 gateway=2001:470:6e:xxx::1

After the setup the routes are marked as unreachable and nothing works… until I try to ping the IPv6 from outside. As soon as I try to ping the IPv6 tunnelbroker interface through some web service, the Mikrotik log says “link up” and IPv6 starts to work.

What is wrong? (RouterOS 6.22, Mikrotik 2011UiAS-2HnD, FW 3.19)

Thanks,
Lars

Issue confirmed on 6.20 and 6.22, solved by downgrading to 6.19.