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Re: Berkeley Packet Filter


On 16/09/12 12:54, David Given wrote:
> ifconfig: ioctl (SIOCAIFADDR): Invalid argument
> Can't attach interface ath0 to bpf device /dev/bpf0: No such device or
> address
> Failed to bring up ath0.

You might see more clearly what ifup is doing with the -v switch.

It looks like a different error happens first.

The second message sounds ambiguous, maybe it means "no such device,
ath0" or "no such address" rather than "no such device, bpf0".

bpf should be available, because the DEBIAN config includes the GENERIC
config, with a few other things disabled but this is still there:

> # The `bpf' device enables the Berkeley Packet Filter.
> # Be aware of the administrative consequences of enabling this!
> # Note that 'bpf' is required for DHCP.
> device          bpf             # Berkeley packet filter

Steven Chamberlain

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