求最优非CIDR格式IPv6地址验证正则表达式及疑难场景

我正在开展一项收集优质IPv6地址验证正则表达式的项目，但本人对正则表达式并不精通。IPv6的表示方式极为多样，导致现有正则可能适配部分场景却遗漏边缘情况。本次仅需匹配非CIDR格式的IPv6地址，现提出两个问题：

1. 您所知的最优非CIDR格式IPv6地址验证正则表达式是什么？
2. 您遇到过的最棘手/典型边缘测试场景有哪些？

注：不寻求工具库，仅需正则表达式。

已收集的测试用例：

• 有效地址集合
• 无效地址集合

尝试过的正则及存在问题 #

Attempt 1 - 遗漏IPv4嵌入IPv6格式地址 #

^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$

Attempt 2 - 遗漏大量测试用例 #

^(?:[A-f0-9]{1,4}:){7}[A-f0-9]{1,4}|(?=(?:[A-f0-9]{0,4}:){2,8}(?::\d{1,3}\.){3}\d{1,3}$)(([0-9a-fA-F]{1,4}(:)){1,6}|:(:[0-9a-fA-F]{1,4}(:)){1,5}|((([0-9a-fA-F]{1,4}:){1,6})|((:[0-9a-fA-F]{1,4}){1,6}))(?:(:\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})|(?:\/\d\d?)|\b|$))$

Attempt 3 - 遗漏以::结尾的地址 #

^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$

Attempt 4 - 遗漏IPv4嵌入IPv6及带接口名的地址，误匹配大量无效地址 #

(([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4})

Attempt 5 - 遗漏带区域索引的地址，匹配部分无效地址 #

(?:^|(?<=\s))(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))(?=\s|$)

感谢您分享相关知识与经验！

内容的提问来源于stack exchange，提问作者David Hooton