[CentOS] sar -n DEV does not show bonded interfaces

Anyone know how to get statistics on bonded interfaces?  I have a
system that does not use eth0-3, rather we have bond0, bond1, bond2.
The members of each bond are not eth0-3, rather they are eth6, eth7,
etc.  I didn't see anything in the man page about forcing sar to
collect data on specific network interfaces.