bootstrapping /usr/sbin/pkg inside a jail

[Fbsd8]

On a fresh install from iso cd I get this

/root >/usr/sbin/pkg
The package management tool is not yet installed on your system.
Do you want to fetch and install it now? [y/N]: y
Bootstrapping pkg from 
pkg+http://pkg.FreeBSD.org/freebsd:10:x86:32/latest, please wait...
Verifying signature with trusted certificate 
pkg.freebsd.org.2013102301... done
Installing pkg-1.2.7_2... done
If you are upgrading from the old package format, first run:


But after starting a jail and issuing the same command I get this


jexec dir23 tcsh
dir23 /root >/usr/sbin/pkg
The package management tool is not yet installed on your system.
Do you want to fetch and install it now? [y/N]: y
Bootstrapping pkg from 
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-current/Latest/, 
please wait...
pkg: Error fetching 
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-current/Latest//Latest/pkg.txz: 
File unavailable (e.g., file not found, no access)
A pre-built version of pkg could not be found for your system.
Consider changing PACKAGESITE or installing it from ports

Why 2 different URL's?
 From inside of a jail how do I install pkg?