problems connecting with IPv6 over PPPoE

[Ross Penner]

Everything seems to be set up fine, but I don't seem to get an IPv6
address assigned. I know that my ISP supports it because when I connect
directly with my Ubuntu desktop, IPv6 is configured.

I'm hoping somebody can provide some insight into the what configuration
I've set up wrong or missed completely. I'm running 10.0 Release 

My ppp.conf follows:
default:
  set log Phase tun command
  set ifaddr 10.0.0.1/0 10.0.0.2/0
TekSavvy:
  set device PPPoE:ue0
  set authname #loginname
  set authkey #password
  set dial
  set login
  add default HISADDR
  add default HISADDR6
  enable dns

ifconfig tun0:
tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1460
	options=80000<LINKSTATE>
	inet6 fe80::xxxx:xxxx:xxxx:xxxx%tun0 prefixlen 64 scopeid 0x7 
	inet xxx.xxx.xxx.xxx --> xxx.xxx.xxx.xxx netmask 0xffffffff 
	nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
	Opened by PID 924

relevant rc.conf enteries:
ppp_enable="YES"
ppp_mode="ddial"
ppp_nat="YES"
ppp_profile="TekSavvy"