Devd event from GEOM?

[Brooks Davis]

On Tue, Jan 25, 2005 at 05:15:47PM +0000, Robert Watson wrote:
> 
> On Tue, 25 Jan 2005, Warner Losh wrote:
> 
> > > It depends a bit on where we sit: we probably want a neteventd that knows
> > > about this sort of thing and performs unified network interface
> > > management.  In the mean time, I just want dhclient launched, because
> > > dhclient already knows about ssid's, link state, etc. 
> > 
> > We don't neet yet another daemon around for that.
> 
> Ah, but we do, because whatever daemon it is needs to provide unified
> management of routing in the presence of multiple DHCP and link locally
> configured network interfaces.  I.e., when I'm switching between wireless
> and wired networks, Useful Things Should Happen, and this can't currently
> be properly managed by today's dhclient.  Likewise, I want to always have
> link local addresses configured for every network interface, and not have
> things like dhclient step on them.  This requires dhclient to become
> substantially more mature and/or grow a lot, or it requires a new daemon. 
> Having many daemons is just asking for them all to step on each other's
> toes, adding and removing addresses and routes in ways that leaves me with
> nothing useful to network with, requiring user intervention.  If you've
> ever used a FreeBSD box in this scenario, followed by a Mac OS X box,
> you'll know what I mean.  Neither is perfect, but the one with centralized
> configuration management does a much better job :-).

FWIW, Sam's got a port of openbsd's dhclient in perforce.  It's
apparently significantly less foobar then ours.  Unfortunatly, dhclient
isn't enough because we also need wpa_supplication for modern wireless
networks (it also provides basic 802.1x support for wired interfaces in
linux and we'll probably want that too.)  I think we'll be able to
simply add a wpa_supplicant_ifs="..." variable to start wpa_supplicant
independent of dhclient, but I'm not 100% sure yet.

-- Brooks

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