Can one have a static IP wired network connection with failover to wireless?

Chris Green cl at isbd.net
Mon Jan 14 15:21:35 UTC 2013


On Sun, Jan 13, 2013 at 03:39:27PM -0800, NoOp wrote:
> On 01/13/2013 03:52 AM, Chris Green wrote:
> > On Sat, Jan 12, 2013 at 02:56:41PM -0800, NoOp wrote:
> >> On 01/12/2013 06:53 AM, Chris Green wrote:
> >> > I have a small server system on my home LAN running Ubuntu 12.10, it has
> >> > a static IP (in the 192.168.1.x range).  It has a hard-wired Gigabit
> >> > ethernet connection but I would like, if possible, to make so that if
> >> > the hard-wired ethernet is lost for any reason (e.g. I trip over the
> >> > wire, some one else vacuums it up, etc.) then the wireless connection
> >> > can take over.
> >> > 
> >> > Is this possible with a static IP?
> >> > 
> >> 
> >> Yes. I do this on all of my laptops when at home. If I unplug the hard
> >> wire, wifi picks up and connects to the default AP.
> >> 
> > ... but do they have static IP?  I know it works with dynamic, I have a
> > laptop like yours.
> > 
> 
> Yes. See:
> 
> <http://paste.ubuntu.com/1529445/>
> 
> In this case the static IP is 192.168.7.102 for both eth0 and wlan0.
> Notice that when I connect to wired from wireless the static IP address
> gets assigned to eth0. When I pull the wired, the wireless is started
> automatically & eth0 drops it's IP address.
> 
> Everything is standard network-manager configuration - 1 wired - 1 wireless.
> 
Excellent, thank you.  So if I configure both the wired and wireless in
the same way, i.e. 'manual' with the same IP then Network Manager works
things out right.

-- 
Chris Green




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