Implementing IP_SENDIF (like SO_BINDTODEVICE)

[Gleb Smirnoff]

On Wed, Oct 27, 2004 at 12:52:33PM -0700, Bruce M Simpson wrote:
B> On Wed, Oct 27, 2004 at 12:28:22PM -0700, Julian Elischer wrote:
B> > >It annoys me that we have to resort to BPF to send IP datagrams on
B> > >unnumbered interfaces. Here is a half baked idea. Please look and
B> > >tell me what you think.
B> > 
B> > I've sent lots of datagrams on un-numberred interfaces using netgraph..
B> 
B> I should qualify my post a bit more: I began thinking along these lines
B> with the intention of enabling ISC dhcp (and dhclient) to be compiled
B> without using bpf support. I don't have the time or interest to port ISC
B> dhcp to use netgraph, but I'd be interested to see the results if that
B> happened.

ng_device can be attached to "orphans" hook of ng_ether. /dev/ngdX opened
by dhcpd, and packets processed.

What is benefit to get rid of bpf? What is problem with it?

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Totus tuus, Glebius.
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