* Account for ACPI BIOSes that report a rate of 0xffff while they are still
initializing (adapted from the HAL linux backend)
* Add support for two new net properties: net.freebsd.ifindex and
net.80203.rate
* Add support for the MBREXT GEOM class
* Create /media for 6.1 and 5.5 users that do not have this directory in
mtree
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