Date: Tue, 02 Jun 2009 09:10:35 -0700 From: Sam Leffler <sam@freebsd.org> To: Brooks Davis <brooks@freebsd.org> Cc: freebsd-rc@freebsd.org Subject: Re: Removal of deprecation for network_interfaces != AUTO Message-ID: <4A254EFB.2020001@freebsd.org> In-Reply-To: <20090602155403.GF14685@lor.one-eyed-alien.net> References: <4A21A4F6.5060709@dougbarton.us> <20090601212506.GA2351@lor.one-eyed-alien.net> <4A24B99B.9050703@infracaninophile.co.uk> <20090602155403.GF14685@lor.one-eyed-alien.net>
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Brooks Davis wrote:
> On Tue, Jun 02, 2009 at 06:33:15AM +0100, Matthew Seaman wrote:
>
>> Brooks Davis wrote:
>>
>>
>>> I've never seen a valid use case, just failures to understand the
>>> current system.
>>>
>> My laptop has iwi0 and bge0 interfaces. At work, both of these obtain
>> addresses and default routes by DHCP, but from two completely different DHCP
>> servers. When I'm plugged into the wired network I want the bge0 interface to
>> be the default route, but iwi0 comes first in the list of interfaces produced
>> by ifconfig, so it gets configured first and sets the route. Of course, when
>> I'm not plugged into the wired network I want iwi0 to have the default route,
>> so I can't just use dhclient.conf to disregard routing information on that
>> interface.
>>
>> All in all, setting network_interfaces="bge0 iwi0 lo0" does exactly what I
>> want with minimal effort.
>>
>
> This is an interesting use case. This is certainly the easiest way
> to do this in 7. FYI, it won't work by default in 8.0 because we
> only run dhclient from devd so there is no ordering unless you set
> synchronous_dhclient="YES". What I've been thinking here is that we
> should have a way to tell dhclient which interface(s) to prefer for a
> default route. I've been meaning to fix that for a while, but since
> I've been using a cardbus wireless device, I've not needed to scratch
> that itch.
>
Some people prefer to use lagg's failover handling to handle the
wired-wireless switchover.
Sam
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