Description of problem: This PR: https://github.com/ceph/ceph/pull/55883 changed haproxy configs from `*` to `[::]` with the goal to support IPv4 and IPv6 but HAProxy requires the `v4v6` flag to use this syntax. Documentation link # To listen on all IPv4 and IPv6 addresses, use [::] as the address and specify the v4v6 argument: frontend myfrontend bind [::]:80 v4v6 default_backend web_servers When using virtual_ip, it works fine. We only hit the issue when using virtual_ips_list option. https://www.haproxy.com/documentation/haproxy-configuration-tutorials/core-concepts/frontends/#listen-on-multiple-ip-addresses-and-ports
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Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Important: Red Hat Ceph Storage 8.1 security, bug fix, and enhancement updates), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2025:9775