为什么我们在IPv4地址中没有区域ID如％字符后的IPv6地址？

问题描述

在IPv6地址中，我们可以看到一个区域ID附加百分号％字符（例如fe80::1ff:fe23:4567:890a%3）以标识接口。但是为什么我们不将它们包含在IPv4地址中？

解决方法

但是我检查了ipv4 netconf，对ipv4-address的描述提到了区域ID。 http://www.netconfcentral.org/modules/ietf-inet-types

  typedef ipv4-address {
  type string {
    pattern
      '(([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.){3}'
        + '([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])'
        + '(%[\p{N}\p{L}]+)?';
  }
  description
    "The ipv4-address type represents an IPv4 address in
   dotted-quad notation.  The IPv4 address may include a zone
   index,separated by a % sign.

   The zone index is used to disambiguate identical address
   values.  For link-local addresses,the zone index will
   typically be the interface index number or the name of an
   interface.  If the zone index is not present,the default
   zone of the device will be used.

   The canonical format for the zone index is the numerical
   format";
}