2.3 Uppercase or Lowercase (大写或小写)
2.3 Uppercase or Lowercase (大写或小写)
[RFC4291] 没有提到大写或小写的任何偏好.
2001:db8:aaaa:bbbb:cccc:dddd:eeee:aaaa
2001:db8:aaaa:bbbb:cccc:dddd:eeee:AAAA
2001:db8:aaaa:bbbb:cccc:dddd:eeee:AaAa
[RFC4291] 没有提到大写或小写的任何偏好.
2001:db8:aaaa:bbbb:cccc:dddd:eeee:aaaa
2001:db8:aaaa:bbbb:cccc:dddd:eeee:AAAA
2001:db8:aaaa:bbbb:cccc:dddd:eeee:AaAa