Re: WiFi restoration

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On Mon, 2015-05-11 at 13:33 +0200, Timothy Murphy wrote:
> The manual says the device has IP address 192.168.10.1,
> but as far as I can see you have to have a machine
> running 192.168.1.something to see the device's web-page?
> I know 192.168.10.* is an allowed address,
> but is it so popular that one can assume it is in use?

Within a totally isolated LAN, you can use almost any IP that you want
to.  But once you join other networks (LAN, WAN, or internet), you have
to use the ones reserved for private use (such as 192.168.x.y, but there
are a few others, as well - 10.x.y.z, 172.16.x.y to 172.31.x.y).

Taking the common 192.168.x.y one, the first three quads have to be the
same (for the usual 255.255.255.0 netmask) to be able to talk between
themselves (the netmask sets the boundary between what's considered
inside or outside; and to reach what's outside, you have to go through
the gateway).

So, if you want to talk to something at 192.168.10.1, you'll either need
to be in the same 192.168.10.x subnet, or you'd need to change the
netmasks on both devices to 255.255.0.0.


> I managed to see the device's web-page briefly, by switching off WiFi
> on my laptop, connecting the device to the laptop by ethernet, and
> changing the laptop's ethernet address to 192.168.10.5. Now I could
> see the web-page at 192.168.10.1 for about 30 seconds, 
> before it disappeared and my laptop lost its ethernet IP address
> (ifconfig just gave an IPv6 address).

You could create a network connection on your laptop that doesn't use
DHCP, so you can preset your laptop to be 192.168.10.something, to play
with that device, while you configure things.

-- 
tim@localhost ~]$ uname -rsvp

Linux 3.19.5-100.fc20.i686 #1 SMP Mon Apr 20 20:28:39 UTC 2015 i686

All mail to my mailbox is automatically deleted, there is no point trying
to privately email me, I will only read messages posted to the public lists.

George Orwell's '1984' was supposed to be a warning against tyranny, not
a set of instructions for supposedly democratic governments.

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