when enabling IRQ, compare channel type to the channel type, not the type (string) passed in from the caller -- unbreaks A10/A20 audio after awindma split
dtrace expects a globally accessible syscall symbol.
don't pay attention to special characters if they don't come from the command
line (from jmcneill)
Greatly simplify ioctl handling by fully relying on ether_ioctl and a
ifflags-change callback, together with a shadow copy of the last active
interface flags.
Fix ALLMULTI vs. PROMISC handling.
Fix mac hash filter calculation by reversing the crc bits (pointed out
by Jared).