ca89308227
Automatic merge from submit-queue Updates Kubeadm Master Endpoint for IPv6 **What this PR does / why we need it**: Previously, kubeadm would use ip:port to construct a master endpoint. This works fine for IPv4 addresses, but not for IPv6. Per [RFC 3986](https://www.ietf.org/rfc/rfc3986.txt), IPv6 requires the ip to be encased in brackets when being joined to a port with a colon. This patch updates kubeadm to support wrapping a v6 address with [] to form the master endpoint url. Since this functionality is needed in multiple areas, a dedicated util function was created for this purpose. **Which issue this PR fixes** Fixes Issue https://github.com/kubernetes/kubeadm/issues/334 **Special notes for your reviewer**: As part of a bigger effort to add IPv6 support to Kubernetes: Issue #1443 Issue #47666 **Release note**: ```NONE ``` /area kubeadm /area ipv6 /sig network /sig cluster-ops |
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Kubernetes
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