quagga setup

Morning all.

I have set up a bgp ipv6 tunnel, and the tunnel is working fine. I can see BGP messages flowing back and forth.

However, doing a tcpdump, i see the following:

me ->
Open Message (1), length: 29
Version 4, my AS <myasn>, Holdtime 180s, ID <myrouterid>
Optional parameters, length: 0
he ->
Notification Message (3), length: 21, OPEN Message Error (2),
subcode Capability Message Error (7)

i'm currently using quagga 0.99.17() from the FreeBSD 8.1-STABLE ports
collection, if that's of any help.

config currently it is:

neighbor 2001:470:xxxx remote-as 6939
neighbor 2001:470:xxxx description Hurricane Electric IPv6 Tunnel
via tunnelbroker.com
neighbor 2001:470:xxxx route-map ipv6-he-out in
neighbor 2001:470:xxxx route-map ipv6-he-out out

address-family ipv6
network 2605:xxxx::/32
neighbor 2001:470:xxxx activate

the route-map is a basic deny, so i can see what routes i get from you,
to make sure nothing blows up in my face.

the open i get from HE is:

Open Message (1), length: 45
Version 4, my AS 6939, Holdtime 180s, ID <herouterid>
Optional parameters, length: 16
Option Capabilities Advertisement (2), length: 6
Multiprotocol Extensions (1), length: 4
AFI IPv6 (2), SAFI Unicast (1)
0x0000: 0002 0001
Option Capabilities Advertisement (2), length: 2
Route Refresh (Cisco) (128), length: 0
Option Capabilities Advertisement (2), length: 2
Route Refresh (2), length: 0

any suggestions? my thought is that perhaps HE's side doesn't like the fact that i don't advertise any options/capabilities?

This is my first attempt at setting up an ipv6 BGP session. So i may be missing something basic.