Creating a BGPPeer with disableMP:true does not work, the value is set to true in BGPPeer resource but set to false in frrconfiguration. This causes RouteAdvertisement created for advertising pods networks in OVNK to be erroneous state.

Though user is warned during creation of BGPPeer resource about it being deprecated.
Warning: disable mp is deprecated and has no effect since it's the default behavior now

    4.20

    Always

    1. Set up OVNK BGP route advertisement to advertise routes 
apiVersion: k8s.ovn.org/v1
kind: RouteAdvertisements
metadata:
  name: default
spec:
  advertisements:
  - PodNetwork
  frrConfigurationSelector: {}
  networkSelectors:
  - networkSelectionType: DefaultNetwork
  nodeSelector: {}

     2. Install metallb operator, create metallb resource, set up FRR router and create BGPPeer 

apiVersion: metallb.io/v1beta2
kind: BGPPeer
metadata:
  name: peer-64500
  namespace: metallb-system
spec:
  disableMP: true
  holdTime: 10s
  myASN: 64512
  peerASN: 64500
  peerAddress: 192.168.111.60   

    oc create -f ~/Documents/scalelab-yaml/singlehop-RDU/peer-64500-64512.yaml  Warning: disable mp is deprecated and has no effect since it's the default behavior now bgppeer.metallb.io/peer-64500 created   

 The BGPPeer resource is created with warning with value set to true but set to false in frrconfiguration and RouteAdvertisement ends up being non functional in Not Accepted state.

oc get ra
NAME      STATUS
default   Not Accepted: configuration error: DisableMP==false not supported, seen on FRRConfiguration openshift-frr-k8s/metallb-worker-2 neighbor 192.168.111.60
 
apiVersion: metallb.io/v1beta2
kind: BGPPeer
metadata:
  name: peer-64500
  namespace: metallb-system
spec:
  disableMP: true
  holdTime: 10s
  myASN: 64512
  peerASN: 64500
  peerAddress: 192.168.111.60

oc -n openshift-frr-k8s get frrconfigurations.frrk8s.metallb.io metallb-worker-0 -oyaml
apiVersion: frrk8s.metallb.io/v1beta1
kind: FRRConfiguration
metadata:
  creationTimestamp: "2025-07-30T14:05:58Z"
  generation: 1
  name: metallb-worker-0
  namespace: openshift-frr-k8s
  resourceVersion: "535396"
  uid: 88289ce5-ac18-486b-9980-9121a79d89db
spec:
  bgp:
    routers:
    - asn: 64512
      neighbors:
      - address: 192.168.111.60
        asn: 64500
        disableMP: false
        dualStackAddressFamily: false
        holdTime: 10s
        keepaliveTime: 3.333333333s
        passwordSecret: {}
        port: 179
        toAdvertise:
          allowed:
            mode: filtered
            prefixes:
            - 10.10.10.1/32
            - 10.10.10.2/32
            - 10.10.10.3/32
          withCommunity:
          - community: 65001:65500
            prefixes:
            - 10.10.10.1/32
            - 10.10.10.2/32
            - 10.10.10.3/32
        toReceive:
          allowed:
            mode: filtered
      prefixes:
      - 10.10.10.1/32
      - 10.10.10.2/32
      - 10.10.10.3/32
  nodeSelector:
    matchLabels:
      kubernetes.io/hostname: worker-0
  raw: {}

  

    The value to be set to true in frrconfiguration so that routeadvertisement resource is functional.