Can IOS router do PAT using a different IP other the interface outside?

[jopontes]

I tried this, but it did not work.

ip local pool testpool 10.0.0.10

ip nat inside source list 100 pool testpool overload

The ip nat pool gives me this:

C1841(config)#ip nat pool patpool 10.0.0.6 10.0.0.6 netmask 255.255.255.255

%Pool patpool mask 255.255.255.255 too small; should be at least 255.255.255.252

I read that when ip nat pool is full it will not do PAT.

Is there any workaround?

[jopontes]

Any help is greatly appreciated.