Re: inet increment w/ int8

Greg Stark <gsstark@mit.edu>

From: Greg Stark <gsstark@mit.edu>
To: pgsql-hackers@postgresql.org
Date: 2005-04-19T16:41:34Z
Lists: pgsql-hackers
Bruce Momjian <pgman@candle.pha.pa.us> writes:

> am thinking we should support only inet + inet, like this:
> 
> 	SELECT '1.2.3.4'::inet + '0.0.1.2'::inet;

I don't think inet+inet makes any sense.

I think inet+int4 should work by adding to the host address and overflowing if
it exceeds the network mask.

Ie, 

10.0.0.0/24   + 1 = 10.0.0.1/24
10.0.0.255/24 + 1 => overflow

Or

10.1/16 + 1      = 10.1.0.1/16
10.1/16 + 16384  = 10.1.64.0/16
10.1/16 + 65536  => overflow



-- 
greg