how to configure BGP ipv6 bgp neighbors and deliver ipv4 routes through the 'network ipv4' command.

[siwangqishidk]

frr verison 6.0.3, how to configure ipv6 bgp neighbors and deliver ipv4 routes through the 'network ipv4' command.

  As far as I know, frr has already supported rfc5549 through the code.
  Is there any document or configuration manual that can be provided? 
  
  Looking forward to your help.

  Here is my configuration.

router bgp 65001
 bgp router-id 192.168.1.51
 no bgp default ipv4-unicast
 coalesce-time 1000
 bgp bestpath as-path multipath-relax
 neighbor RS peer-group
 neighbor RS remote-as external
 neighbor RS ebgp-multihop 10
 neighbor RS capability extended-nexthop
 neighbor 555::555 peer-group RS
 !
 address-family ipv4 unicast
  network 172.104.130.31/32
  redistribute kernel
 exit-address-family
 !
 address-family ipv6 unicast
  redistribute kernel
  redistribute connected
  redistribute ospf6
  neighbor RS activate
 exit-address-family
!

I cannot see the 172.104.130.31 I delivered on the peer device.

[ton31337]

You need neighbor RS activate under address-family ipv4 unicast.

[siwangqishidk]

Thank you,it works very well.

[siwangqishidk]

How can I advertise 172.104.130.31/32 with nexthop 555::554 (local ipv6 or global ipv6, now I'm use global ipv6)?
I try to use

router bgp 65001
 bgp router-id 192.168.1.51
 no bgp default ipv4-unicast
 coalesce-time 1000
 bgp bestpath as-path multipath-relax
 neighbor RS peer-group
 neighbor RS remote-as external
 neighbor RS ebgp-multihop 10
 neighbor RS capability extended-nexthop
 neighbor 555::555 peer-group RS
 !
 address-family ipv4 unicast
  network 172.104.130.31/32 route-map ipv6
  redistribute kernel
  neighbor RS activate
 exit-address-family
 !
 address-family ipv6 unicast
  redistribute kernel
  redistribute connected
  redistribute ospf6
 exit-address-family
!
route-map ipv6 permit 10
 set ipv6 next-hop global 555::554
!

But I see the 172.104.130.31 I delivered on the peer device that its nexthop is ipv4.
I want to see like this and is it supported ?

image is from https://www.ciscolive.com/c/dam/r/ciscolive/global-event/docs/2022/pdf/BRKDCN-2828.pdf .

I'm very sorry to bother you again, and I look forward to your reply.

[ton31337]

Use route-map for outgoing direction per neighbor. E.g.: neighbor RS route-map ipv6 out, under address-family ipv4 unicast. Using network ... does not change the next-hop really, it's always self.