验证IPv6网络掩码 [英] Validating IPv6 netmask

问题描述

就像我们有控制IPv4网络掩码有效性的规则一样，IPv6是否有自己的一套规则来限定网络掩码?

Just as we have rules governing the validity of an IPv4 netmask, does IPv6 have its own set of rules to qualify a netmask?

谢谢！

推荐答案

从技术上讲，更好的答案可能是IPv6不再具有网络掩码.使用IPv6，您可以拥有一个前缀长度"，您可以将其解释为等效网络掩码中的1位数字.

Technically the better answer may be that with IPv6 you no longer have a netmask. With IPv6 you have a "prefix length" which you can interpret as the number of 1 bits in an equivalent netmask.

采用前缀长度"的概念，您不再需要网络掩码规则"，尽管只有一个:网络掩码应仅由左对齐的连续1位组成.

Taking the concept of "prefix length" you no longer have to have "netmask rules", although there pretty much is only one: the netmask should consist of only left aligned contiguous 1 bits.

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