IPv4的文本表示法:十进制点号表示法
IPv6的文本表示法:带有前导零和零压缩法的冒号十六进制格式
解释一下就是:
Format is x:x:x:x:x:x:x:x
x is a 16 bit hexadecimal field
FEDC:BA98:7654:3210:FEDC:BA98:7654:3210
Leading zeros in a field are optional
:: can be used to represent multiple groups of 16 bits of zero
:: can only be used once in an address
FF01:0:0:0:0:0:0:101 = FF01::101
0:0:0:0:0:0:0:1 = ::1
0:0:0:0:0:0:0:0 = ::
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