The Mathematical Reality of IP Addressin in IPv4...
Alex P. Rudnev
alex at Relcom.EU.net
Thu Aug 26 09:30:18 UTC 1999
> SUMMARY of
> By distinguishing apparently identical IP addresses by using different
> subnet masks one can increase the number of IP addresses distinguishable by
> a 32-bit number to greater than 2^32.
No doubt. But... the IP packet have not _netmask_ field, and TCP/IP
socket have not too. If you add this, it's easier to add extra address
On the other hand, I can send the draft too -:). If we add 'PORT RANGE'
field to the 'PTR' DNS record, and some trick to the 'xx.xx.xx.xx'
address notation, we can split one IP address to the 4 - 8 hosts by
allocating the different port ranges for every one. And it do not need to
rewrite TCP stack and routers at all, only a little part in DNS and
service resolver, or in the 'connect' and 'bind' function (and can be
realised by the NAT just now. -:). There is not too big problem to
increase IPv4 address space twise (cook one bit from the port field, and
Through I wonder why people are making so many noice aroung unexisting
IPv6 and don't try to improve existing systems a little... IPv4 have a
few opportunities to create milti-level address hierarchy:
- source routing
- port/address mapping
- netmask and AS numbers (for the routing only).
Through after SNMP, MLPS etc I wonder to nothing...
> Except for the problem that you need 32 extra bits to carry a mask or 5
> extra bits to carry the masklen.
> IETF should have waited until 2000/04/01 before posting this.
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Aleksei Roudnev, Network Operations Center, Relcom, Moscow
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