Re: Brokenness in parsing of pg_hba.conf - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: Brokenness in parsing of pg_hba.conf
Date
Msg-id 200401072014.i07KEKS16358@candle.pha.pa.us
Whole thread Raw
In response to Re: Brokenness in parsing of pg_hba.conf  (Greg Stark <gsstark@mit.edu>)
List pgsql-hackers
Greg Stark wrote:
> 
> Kurt Roeckx <Q@ping.be> writes:
> 
> > It's a.b.0.c.
> > 
> > Note that the "c" can be bigger than 255, so 128.1.512 turns into
> > 128.1.2.0.  This can make perfect sense when you still used
> > classes.
> 
> Perhaps it'll seem less strange if I restate the rule so there aren't four
> different cases:
> 
>   A dotted quad is 1-4 numbers separated by dots where each number is an 8 bit
>   number except for the last which includes all the remaining bits in the 32
>   bit address.
> 
> It might seem strange to people used to networks smaller than /24. But if you
> have a /16 with thousand hosts and don't need subnets it makes perfect sense
> to number them from 1-1000 rather than using base 256.
> 
> I use it all the time for my net-10 addresses. They're subnetted into 10.1/16
> 10.2/16 etc. Sadly, I don't have thousands of hosts though.

Oh, the last number can be >255.  That seems useful, I guess.

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
359-1001+  If your life is a hard drive,     |  13 Roberts Road +  Christ can be your backup.        |  Newtown Square,
Pennsylvania19073
 


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