North American Network Operators Group|
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Re: The Mathematical Reality of IP Addressin in IPv4...
> What this proposal appears to be proposing is to permit NON-CONTIGUOUS > netmasks such as: > > 255.128.127.0 > > Or, in binary: > > 1111111111 10000000 01111111 00000000 > > Thus, the network number would actually consist of all 8 bits of octet > one, the first bit of octet two, the last 7 bits of octet 3 and none of > octed four. > Non-contigious masks were allowed up until the CIDR era... :) --bill