plpgsql -- any '+' ,'-' operators for INET?

Anyone know an easy way to increment IP type inet?

For example, I'd like to create a list of all Ips contained in a subnet. For
that, I can grab the network address and broadcast address from a given CIDR
subnet type, and then fill in all the Ips between the two.

I know I can:
* convert an INET addr to text using host()
* grep the digits after the last period (for class C addresses, anyway)
* convert that to an integer
* increment the integer
* concatenate it after the 1st 3 sets of digits in the address to produce
the next ip

Just wondering if there's an easier way, or anyone has written a function to
handle this?

--
Randall Perry
sysTame

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