Installing or upgrading to OCP 4.14 on platforms that allow keepalived-managed VIPs for API and Ingress can fail because of the new "<interface-name>:vip" label applied by /etc/kubernetes/static-pod-resources/keepalived/keepalived.conf.tmpl The label was added by https://issues.redhat.com/browse/OCPBUGS-4370

The man page reveals that labels are restricted to 15 characters - https://man7.org/linux/man-pages/man8/ip-address.8.html

There is no check or safety in place that prevents long interface names like enp33s0f0np0 from exceeding the length when the :vip suffix is added.

keepalived will fail to apply the VIP and report this error:
Netlink: error: Numerical result out of range(34), type=RTM_NEWADDR(20), seq=1700238417, pid=0

4.14

Install or upgrade to OCP 4.14 on a baremetal host that has a long interface name. Or use a custom interface name like "bridge-internal" Several customers of mine have created bridge interfaces like this in order to allow VMs to share OpenShift primary interface.

[laptop]$ ssh core@ocp-node-1
Red Hat Enterprise Linux CoreOS 414.92.202311061957-0

[core@ocp-node-1 ~]$ ip -brief -4 a s
lo               UNKNOWN        127.0.0.1/8  
tun0             UNKNOWN        10.130.0.1/23 
enp33s0f0np0     UP             10.15.168.23/24  ### API & Ingress VIPs are missing here

[core@ocp-node-1 ~]$ echo -n "enp33s0f0np0:vip" | wc -c
16

[core@ocp-node-1 ~]$ sudo crictl logs $(sudo crictl ps --quiet --label io.kubernetes.container.name=keepalived) 2>&1 | grep error
Fri Nov 17 16:39:52 2023: Netlink: error: Numerical result out of range(34), type=RTM_NEWADDR(20), seq=1700238417, pid=0

[core@ocp-node-1 ~]$ grep label /etc/kubernetes/static-pod-resources/keepalived/keepalived.conf.tmpl 
        {{ .Cluster.APIVIP }}/{{ .Cluster.VIPNetmask }} label {{ .VRRPInterface }}:vip
        {{ .Cluster.IngressVIP }}/{{ .Cluster.VIPNetmask }} label {{ .VRRPInterface }}:vip

[core@ocp-node-1 ~]$ grep label /etc/keepalived/keepalived.conf 
        10.15.168.68/32 label enp33s0f0np0:vip
        10.15.168.69/32 label enp33s0f0np0:vip 

keepalived fails to assign the VIP to the interface and the installation or upgrade is halted

The openshift-install, baremetal-runtimecfg, and/or machine-config-operator should check if the label will exceed 15 characters and reduce it's length if required.