mach on RH 8.0

[John Dalbec <jpdalbec ysu edu>]

I'm trying to set up a RHL 7.2 chroot on RH 8.0.  I tried "mach -r rh72 setup 
base" but I get the following error:
apt-get: relocation error: /lib/libnss_files.so.2: symbol 
_nss_files_parse_grent, version GLIBC_2.0 not defined in file libc.so.6 with 
link time reference
Any ideas?
Thanks,
John