'unknown FS magic on "/var/run/netns/...' when scaling up egress pod on openshift 4.11 with SDN

Issue

Error messages in crio/event alerting for namespace on egress pods being created on openshift 4.11 similar to below, cluster otherwise healthy:

Nov 15 21:51:29 <node-name> crio[3150]: time="2022-11-15 21:51:29.307184956Z" level=info msg="Got pod network &{Name:<egress-pod-name> Namespace:<namespace> ID:<ID-string> UID:<UID-string> NetNS:/var/run/netns/8c5ca402-3381-4935-baed-ea454161d669 Networks:[] RuntimeConfig:map[multus-cni-network:{IP: MAC: PortMappings:[] Bandwidth:<nil> IpRanges:[]}] Aliases:map[]}"
2022-11-15T21:51:29.283002590Z W1115 21:51:29.282954  181720 pod.go:296] CNI_ADD <namespace>/<egress-pod-name> failed: could not open netns "/var/run/netns/8c5ca402-3381-4935-baed-ea454161d669": unknown FS magic on "/var/run/netns/8c5ca402-3381-4935-baed-ea454161d669": 1021994