BGP peering IPv6 over unnumbered

All,

Does anyone know if this is possible?

My lab configuration:
----------------------------------
R1
Lo0: 2001:1::1:1/128
S1/0: ipv6 unnumbered lo0
frame-relay map ipv6 2001:2::5:1 100
ipv6 route 2001:2::5:1 s1/0

R5
Lo0: 2001:2:5:1/128
S1/0: ipv6 unnumbered lo0
frame-relay map ipv6 2001:1::1:1 100
ipv6 route 2001:1::1:1 s 1/0

R1: BGP config
router bgp 100
  bgp router-id 192.0.0.1
  no bgp default ipv4-unicast
  bgp log-neighbor-changes
  neighbor as200 peer-group
  neighbor as200 remote-as 200
  neighbor 2001:1::5:1 peer-group as200
  !
  address-family ipv6
   neighbor as200 send-community both
   neighbor as200 soft-reconfiguration inbound
   neighbor 2001:1::5:1 activate
  exit-address-family

R5: BGP config
router bgp 200
  bgp router-id 192.0.0.5
  no bgp default ipv4-unicast
  bgp log-neighbor-changes
  neighbor as100 peer-group
  neighbor as100 remote-as 100
  neighbor 2001:1::1:1 peer-group as100
  !
  address-family ipv6
   neighbor as100 send-community both
   neighbor as100 soft-reconfiguration inbound
   neighbor 2001:1::1:1 activate
  exit-address-family
---------------------
Verification:
---------------------
Ping works:
Ping from R5 Loop to R1 Loop
R5#ping 2001:1::1:1 so lo0

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:1::1:1, timeout is 2 seconds:
Packet sent with a source address of 2001:2::5:1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 24/39/72 ms

Telnet works:
R5#telnet 2001:1::1:1 /so lo0
Trying 2001:1::1:1 ... Open

Password required, but none set

[Connection to 2001:1::1:1 closed by foreign host]

Error messages indicate peer not listenign:
*Feb 12 20:14:46.363: BGP: 2001:1::1:1 open active, local address
2001:2::5:1
*Feb 12 20:14:46.443: BGP: 2001:1::1:1 read request no-op
*Feb 12 20:14:46.447: BGP: 2001:1::1:1 open failed: Connection refused
by remote host, open active delayed 17180ms (35000ms max, 60% jitter)

BGP not listening:
telnet 2001:1::1:1 bgp /so lo0
Trying 2001:1::1:1, 179 ...
% Connection refused by remote host

R1 says it is listening (and even has an existing BGP peering to another
peer):
R1# show control-plane host open-ports
Active internet connections (servers and established)
Prot Local Address Foreign
Address Service State
  tcp *:23
*:0 Telnet LISTEN
  tcp *:56860 2001:1::1:1:179
IOS host service ESTABLIS
  tcp *:179
*:0 BGP LISTEN
  tcp *:179
*:0 BGP LISTEN

--------------

I've tried ebgp multi-hop and update-source but I can't think of any way
around the not listening part.

-- 
Chris Proctor
--
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