no route to host

2009-02-02 Thread Vinzenz Hersche
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hello there,

i've the shr unstable from today and got a problem; i was connected on
ssh to my phone and want to test the wifi-connection (so i've got 2
connections, usb and wifi). after i want to connect to wifi, my shell
on the computer freeze.

so i tried to connect a second time, but there's just a failure-message:

skams...@skamster-laptop:~$ ssh r...@192.168.0.202
ssh: connect to host 192.168.0.202 port 22: No route to host
skams...@skamster-laptop:~$

this problem is also there after a reboot.

i think, wifi changed something in /etc/interfaces, but i don't know
what. does someone know, what i must change to connect with usb to my
phone?

thanks a lot for ideas, hope, this failure isn't there in the future.. :)

greets

- --
Vinzenz Hersche
Lehrling 2. Lehrjahr

Puzzle ITC GmbH
www.puzzle.ch

Telefon +41 31 370 22 00
Direkt  +41 31 370 22 04
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Fax +41 31 370 22 01

Puzzle ist Mitglied der Eclipse Foundation:
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Re: [SHR] no route to host

2009-02-02 Thread Joel Newkirk
On Mon, 02 Feb 2009 18:49:00 +0100, Vinzenz Hersche hers...@puzzle.ch
wrote:
 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1
 
 hello there,
 
 i've the shr unstable from today and got a problem; i was connected on
 ssh to my phone and want to test the wifi-connection (so i've got 2
 connections, usb and wifi). after i want to connect to wifi, my shell
 on the computer freeze.
 
 so i tried to connect a second time, but there's just a failure-message:
 
 skams...@skamster-laptop:~$ ssh r...@192.168.0.202
 ssh: connect to host 192.168.0.202 port 22: No route to host
 skams...@skamster-laptop:~$
 
 this problem is also there after a reboot.
 
 i think, wifi changed something in /etc/interfaces, but i don't know
 what. does someone know, what i must change to connect with usb to my
 phone?
 
 thanks a lot for ideas, hope, this failure isn't there in the future.. :)
 
 greets


Wifi /shouldn't/ touch /etc/network/interfaces, usually the only programs
that will ever try to alter it are network managers.  What procedure did
you use when trying to bring up wifi?  I've previously used ifup eth0
from console or terminal, but with newest SHR (Jan31 or so opkg upgrade)
there IS NO ETH0 most of the time, resulting in No such device errors.  

Also note that if you've been connecting and disconnecting the FR from the
host computer many times since the host was rebooted it may have problems. 
Initially my usb0 was the third network device (the '3' in the first column
above) on my host, but currently it's 12.  I've seen it get too high
before and only a reboot of the host would allow it to connect again. 
(sorry, I don't remember where it started failing - IIRC it was at 32 but
don't shoot me if that's way off)

I recently encountered the same problem - unplug from USB, power-cycle
freerunner  wait for boot to finish, plug in USB, wait 5 secs, unplug USB,
wait 5 secs, plug back in, and I had a connection.  (I don't know if it's
the FR or Ubuntu but if I boot or reboot the FR while attached to USB it
usually doesn't connect until unplugged and re-attached, so I'm already
used to unplug/wait/replug)

If that fails, then reboot the FR, open the terminal on the FR and check
the output of ip a s usb0 - allowing for the randomly-selected MAC
address, it should look pretty much like:

3: usb0: BROADCAST,MULTICAST,UP,LOWER_UP mtu 1500 qdisc pfifo_fast qlen
1000
link/ether 22:7d:18:7d:5a:a8 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.202/24 brd 192.168.0.255 scope global usb0
inet6 fe80::207d:18ff:fe7d:5aa8/64 scope link 
   valid_lft forever preferred_lft forever

and ip r should show you:
192.168.0.0/24 dev usb0  src 192.168.0.202 
default via 192.168.0.200 dev usb0 

Presuming that's correct, do the same on the host computer, which should at
least show interfaces usb0, though it may be down or have no IP address at
this point.  If it's down, try ifup usb0 on the host (root or sudo) or
ip l s usb0 up and take a look at the data again.  If the interface is up
on the host but has no IP, try ip a a 192.168.0.200/24 dev usb0 (again,
root or sudo) and see if you can connect.

j


-- 
Joel Newkirk
http://jthinks.com  (blog)
http://newkirk.us/om (FR stuff)


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[SHR] No route to host with latest upgrade of unstable!

2009-01-30 Thread Tony Berth
Dear list,

I just did an upgrade on the latest SHR unstable image and now isn't
possible to connect via ssh to the FR any more. I get the 'No route to host'
error. Were some changes? I thing the usb0 interface gets a inet6 address
only?
Any advice?

Thanks

Tony
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Re: [SHR] No route to host with latest upgrade of unstable!

2009-01-30 Thread wp
Reflashing was helpful for me with this issue. Hopes it will help you too.

On Fri, Jan 30, 2009 at 10:22 AM, Tony Berth tonybe...@googlemail.com wrote:
 Dear list,

 I just did an upgrade on the latest SHR unstable image and now isn't
 possible to connect via ssh to the FR any more. I get the 'No route to host'
 error. Were some changes? I thing the usb0 interface gets a inet6 address
 only?
 Any advice?

 Thanks

 Tony

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Re: [SHR] No route to host with latest upgrade of unstable!

2009-01-30 Thread Fernando Martins
Tony Berth wrote:
 Dear list,

 I just did an upgrade on the latest SHR unstable image and now isn't 
 possible to connect via ssh to the FR any more. I get the 'No route to 
 host' error. Were some changes? I thing the usb0 interface gets a 
 inet6 address only?
 Any advice?

I'm using unstable from 23.01 and ubuntu 8.10 and the setup which is 
advised on the wiki page for usb networking is not working well. 
Firstly, sometimes (if not always) I have to unplug and replug the cable 
for usb to be recognised in Ubuntu.

Then I just run manually:

sudo ifconfig usb0 192.168.0.200 netmask 255.255.255.0

/etc/network/freerunner

where freerunner is the script for automatic routing (or is it 
bridging?) to/from FR.

HTH,
Fernando

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