What were you trying to do that didn't work?

Unable to add label to an IPv6 address even though the label is less than 15 characters long and has interface name as prefix. The same is working for IPv4 address. 

Please provide the package NVR for which bug is seen:

OPENSHIFT_VERSION="4.16"
RHEL_VERSION=9.4
OSTREE_VERSION="416.94.202406251923-0"
Red Hat Enterprise Linux CoreOS release 4.16

How reproducible:

Always

Steps to reproduce

1.  Add an IPv6 address to an existing interface with label.
2. ip -6 addr add fd69::3/112 dev br-ex label br-ex:masq-v6
3. Run 'ip addr show' with label flag and value as used with add command. An empty response can be observed which is not expected.
4. ip a s label br-ex:masq-v6 
5.  However the previously added address gets listed if we use label same as interface name.
6. sh-5.1# ip -6 a s label br-ex
       inet6 fd69::3/112 scope global 
          valid_lft forever preferred_lft forever

Expected results

Should be able to add IPv6 address with label.

Actual results

Not able to add IPv6 address with label.