[Python-Dev] PEP 3144 review. (original) (raw)
DrKJam drkjam at gmail.com
Sat Sep 26 21:07:21 CEST 2009
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2009/9/26 "Martin v. Löwis" <martin at v.loewis.de>
> I don't think the RFCs forbid the zero address being used
RFC 1122 does: "IP addresses are not permitted to have the value 0 or -1 for any of the , , or fields (except in the special cases listed above)." The current version of the PEP and reference implementation do not mention or deal with IPv4 classful addressing (A, B, C, D and E). It would be good to know if any of this (admittedly older yet no less important) functionality is going to be supported. If the library is to concentrate solely on classless addressing (i.e. CIDR) please can this be stated in future revisions of the PEP.
RFC 3021 modifies this requirement, allowing the zero address to be used for an 31-bit prefix.
Regards, Martin
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