an adjustment to nloopbacks. Warning comment updated.
Signed-off-by: Nivedita Singhvi (niv@us.ibm.com)
#
# Vars:
#
-# vifnum Virtual device number to use (default 0). Numbers >=1
+# vifnum Virtual device number to use (default 0). Numbers >=8
# require the netback driver to have nloopbacks set to a
-# higher value than its default of 1.
+# higher value than its default of 8.
# bridge The bridge to use (default xenbr${vifnum}).
# netdev The interface to add to the bridge (default eth${vifnum}).
# antispoof Whether to use iptables to prevent spoofing (default no).