The daemon's advertised listenerUrl/httpUrl interpolate the configured host directly. For an IPv6 literal such as ::1, this produces http://::1:, which is not a valid URL authority; clients cannot parse the endpoint and port-hunt identity probes fail. Bracket IPv6 literals when formatting URLs while preserving the unbracketed host for socket binding.
The daemon's advertised listenerUrl/httpUrl interpolate the configured host directly. For an IPv6 literal such as ::1, this produces http://::1:, which is not a valid URL authority; clients cannot parse the endpoint and port-hunt identity probes fail. Bracket IPv6 literals when formatting URLs while preserving the unbracketed host for socket binding.