[4.12] etcd failure: failed to make etcd client for endpoints [https://[2620:52:0:1eb:367x:5axx:xxx:xxx]:2379]: context deadline exceeded

Description of problem:

install 4.12 of IPv6 single stack disconnected cluster: etcd member is in abnormal status:

1. oc get co|grep etcd
   etcd 4.12.0-0.nightly-2022-10-23-204408 False True True 15h EtcdMembersAvailable: 1 of 2 members are available, openshift-qe-057.arm.eng.rdu2.redhat.com is unhealthy

E1026 03:35:58.409977 1 etcdmemberscontroller.go:73] Unhealthy etcd member found: openshift-qe-057.arm.eng.rdu2.redhat.com, took=, err=create client failure: failed to make etcd client for endpoints https://[26xx:52:0:1eb:3xx3:5xx:fxxe:7550]:2379: context deadline exceeded

How reproducible:
not Always

Steps to Reproduce:
As description
Actual results:
As title
Expected results
etcd co stauts is normal