[mrtg] nic ordering in snmp

[R Dicaire]

Hi folks, while this isn't strictly an mrtg problem, I found it via
mrtg, and the problem is nic ordering in snmp IfTable.
I recently rebooted a slackware server, and eth1 is now
IF-MIB::ifDescr.2, where it had been .3, and eth0 is now
IF-MIB::ifDescr.3 where it had been .2.
This isn't the first time nics have been reordered in snmp, and its
annoying to have to go into mrtg.cfg to change it everytime the
machine is rebooted.
Is the order controlled by what nic is brought up first, second, etc?

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