hello guys
i have a he.net tunnel
i can ping HE from my router
but can't from my pc
i guess i have a routing loop
here's my config:

/interface 6to4
add comment="Hurricane Electric IPv6 Tunnel Broker" disabled=no \
local-address=41.200.4.244 mtu=1280 name=sit1 remote-address=216.66.84.42

/ipv6 address
add address=2001:470:1f12:a50::2/64 advertise=yes disabled=no eui-64=no \
interface=sit1
add address=2001:470:cb37::20c:42ff:fe70:e2e1/64 advertise=yes disabled=no \
eui-64=no interface=ether2-local-master

/ipv6 route
add disabled=no distance=1 dst-address=2000::/3 gateway=2001:470:1f12:a50::1 \
scope=30 target-scope=10

anything missing here?
thank you.

Why would you suspect a routing loop?

The first thing to check if your PC got a SLAAC address and default route, and whether the PC can ping the router.

i *DOOBT* this:
i was having a NetScreen ipSec vpn client
they are crap.
locked up my ipv6 stack
when i removed the network driver ipv6 is back to life
thank you!

Why would you suspect a routing loop?

The first thing to check if your PC got a SLAAC address and default route, and whether the PC can ping the router.