Redistribution into BGP section

R4 Config

router bgp 1
 bgp router-id 4.4.4.4
 bgp log-neighbor-changes
 neighbor 2001:46::6 remote-as 6
 !
 address-family ipv6
  neighbor 2001:46::6 activate
  redistribute ospf 1 match external 1 external 2 route-map TO-BGP
  no synchronization
 exit-address-family
!
route-map TO-BGP permit 10
 match tag 120

Verification

 R6#show bgp ipv6 unicast

   Network          Next Hop            Metric LocPrf Weight Path
*> 2001:5::5/128    2001:46::4              20             0 1 ?
*> 2001:6::/57      ::                                 32768 i
s> 2001:6:0:6::/64  ::                       0         32768 i
s> 2001:6:0:60::/58 ::                       0         32768 i
*> 2001:35::/64     2001:46::4              20             0 1 ?