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Bug
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Resolution: Unresolved
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Major
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rhos-18.0.10 FR 3
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None
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1
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False
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False
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?
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None
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Sprint 4, Sprint 5
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2
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Important
I am testing RHOSO + BGP + IPv6 at controlplane.
When controlplane is configured with IPv6, the FRRConfigurations created by the infra-operator are wrong because the advertised prefixes have "/32" instead of "/128"
[zuul@controller-0 ~]$ oc -n metallb-system get frrconfigurations openstack-glance-22dd4-default-external-api-0 -o yaml
apiVersion: frrk8s.metallb.io/v1beta1
kind: FRRConfiguration
metadata:
creationTimestamp: "2025-08-19T10:50:49Z"
generation: 1
labels:
bgpconfiguration.openstack.org/name: bgpconfiguration
bgpconfiguration.openstack.org/namespace: openstack
bgpconfiguration.openstack.org/pod-name: glance-22dd4-default-external-api-0
bgpconfiguration.openstack.org/uid: 3ba1dc8f-6124-4961-b886-12586f0a5a96
name: openstack-glance-22dd4-default-external-api-0
namespace: metallb-system
resourceVersion: "765594"
uid: 6eccfba5-1e42-492d-a3e1-e2b6ae3970e5
spec:
bgp:
routers:
- asn: 64999
neighbors:
- address: 2620:cf:cf:abc:100:64:2:d
asn: 64999
disableMP: false
passwordSecret: {}
port: 179
toAdvertise:
allowed:
mode: filtered
prefixes:
- 2620:cf:cf:cccc::1e/32
toReceive:
allowed:
mode: filtered
- address: 2620:cf:cf:abc:100:65:2:d
asn: 64999
disableMP: false
passwordSecret: {}
port: 179
toAdvertise:
allowed:
mode: filtered
prefixes:
- 2620:cf:cf:cccc::1e/32
toReceive:
allowed:
mode: filtered
prefixes:
- 2620:cf:cf:cccc::1e/32
nodeSelector:
matchLabels:
kubernetes.io/hostname: worker-2.ocp.openstack.lab
raw: {}
The problem with this is that (in the previous example) the 2620:cf::/32 range is advertised from the OCP nodes, creating wrong routes in the fabric:
[zuul@controller-0 ~]$ oc -n metallb-system -c frr rsh frr-k8s-xqvth vtysh -c "sh run" | grep "2620:cf::/32" network 2620:cf::/32 ipv6 prefix-list 2620:cf:cf:abc:100:64:0:d-pl-ipv6 seq 1 permit 2620:cf::/32 ipv6 prefix-list 2620:cf:cf:abc:100:65:0:d-pl-ipv6 seq 1 permit 2620:cf::/32
The infra-operator should use prefix=128 when IPv6 addresses are used:
https://github.com/openstack-k8s-operators/infra-operator/blob/main/pkg/bgp/funcs.go#L27
- blocks
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OSPRH-9552 BGP DT04 IPv6
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- Closed
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- links to
