[H-GEN] dotless ip notation

[Michael Anthon]

[ Humbug *General* list - semi-serious discussions about Humbug and ]
[ Unix-related topics.  Please observe the list's charter.          ]

Or to put it a simpler way, an IP address is a 32 bit number, the dotted
quad is a simplish way for the human brain to remember these numbers, the
other number is simply the decimal version of this number

> -----Original Message-----
> From: Everist, Geoff [mailto:everistg at switch.aust.com]
> Sent: Thursday, 20 January 2000 2:35 PM
> To: general at lists.humbug.org.au
> Subject: RE: [H-GEN] dotless ip notation
> 
> 
> [ Humbug *General* list - semi-serious discussions about Humbug and ]
> [ Unix-related topics.  Please observe the list's charter.          ]
> 
> [snip]
> 
> > 
> > There is a formula on how to produce this IP address but I 
> > can't find the site now :( Maybe someone else on this list 
> > know where to find it 
> > 
> > 
> 
> To convert to the dotted notation, first convert the dotless 
> decimal number
> to hex. This will give an 8 digit number. Convert the 2 digit 
> pairs back to
> decimal and put dots between them. Sorry for the clumsy 
> description, but
> here's and example:
> 
> Say we have the address 3327036934 (as in Michael's example). 
> Converting to
> Hex, this gives C64E8E06, or C6.4E.8E.06. Converting this 
> back to decimal
> gives 198.78.142.6.
> 
> 
> > 
> > > hi,
> > >    I just got asked by my boss why Squid won't resolve 'dotless 
> > > notation ip
> > >    addresses'
> > > 
> > >    apparenty Micro$oft will.  I've never seen this before 
> > and can't grasp
> > >    why you'd want to use a single decimal number to represent an 
> > > ip address.
> > > 
> 
> This is merely a another decimal representation of the binary 
> IP address,
> meant for machine rather that human consumption
> 
> [snip]
> 
> Cheers
> Geoff Everist
> 
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