Removal of deprecation for network_interfaces != AUTO

[Matthew Seaman]

Sam Leffler wrote:
> 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.

How does that work if the two interfaces are in entirely different networks?
Can you trigger an arbitrary action (such as modifying the routing table)
when a lagg interface fails over?

	Cheers,

	Matthew


-- 
Dr Matthew J Seaman MA, D.Phil.                   7 Priory Courtyard
                                                  Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey     Ramsgate
                                                  Kent, CT11 9PW

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