eir blocking protocol 41? Does eir do native v6?

Hi - quick questions. I'm trying to get a 6to4 tunnel up and for the life of me nothing works. I'm wondering if eir blocks p41/RFC4213 - This is a simple config i've done multiple times with other providers and in other countries.

F2000 (bridged) --> cisco 3825 --> LAN

#sh run int tun0
Building configuration...

Current configuration : 223 bytes
!
interface Tunnel0
description Hurricane Electric IPv6 Tunnel Broker
no ip address
ipv6 address 2001:470:<truncated>/64
ipv6 enable
tunnel source 86.<truncated>
tunnel destination 216.<truncated>
tunnel mode ipv6ip
end


I've also tried setting up the 3825 as a v6 DHCP client and haven't gotten anywhere for native v6 - I haven't put much time into troubleshooting this one, but am curious if eir do native v6 handouts? I had read that they do now.