Currently the CLI doesn’t support applying a configured peer-group to the ipv4-labeled-unicast SAFI, though it is allowed in FRR.
vyos@vyos# set protocols bgp peer-group PG address-family Possible completions: > ipv4-unicast IPv4 BGP neighbor parameters > ipv4-vpn IPv4 VPN BGP neighbor parameters > ipv6-unicast IPv6 BGP neighbor parameters > ipv6-vpn IPv6 VPN BGP neighbor parameters > l2vpn-evpn L2VPN EVPN BGP settings
The change is allowed if I use vtysh and the configuration is fully functional.
router bgp 65000 address-family ipv4 labeled-unicast neighbor PG activate exit-address-family
My specific use case is wanting to use a Listener Range, which doesn’t work for the labeled-unicast SAFI since I can’t attach the peer-group in VyOS' CLI. It does fully work if I drop into vtysh to configure it within FRR.