Audit and cover IPv6 literal and dual-stack DNS entrypoint behavior in scylladb/alternator-client-python, including resolver fallback across address families, direct IPv6 /localnodes discovery, clear all-record failure, URL formatting, and recovery through the original entrypoint.
Jira: DRIVER-913
Parent Jira issue: DRIVER-823
Implementation PR: #104
Audit and cover IPv6 literal and dual-stack DNS entrypoint behavior in scylladb/alternator-client-python, including resolver fallback across address families, direct IPv6 /localnodes discovery, clear all-record failure, URL formatting, and recovery through the original entrypoint.
Jira: DRIVER-913
Parent Jira issue: DRIVER-823
Implementation PR: #104