Re: dev tun0 and ping

[Claudio Jeker <cjeker@ee.ethz.ch>]

On Thu, Feb 01, 2001 at 23:22:40 -0800, Seth Arnold wrote:
> Claudio, I have never seen this sort of thing before, and frankly I am
> very impressed so little was required to get this far. hehe. Cool.
> 
> In any of my own 'ifconfig' outputs, the flags section always shows UP
> if the interface is up. (even lo0.)
> 
> Try breaking that ifconfig command into two lines:
> ifconfig tun0 inet 192.168.2.1 192.168.2.2 mtu 1500
> ifconfig tun0 up
> 
> (It appears to have gotten the netmask correct, but it may not hurt to
> specify the netmask as well....)
> 
> Good luck, and be sure to write back to the list what fixes your
> problem. This sounds neat. :)
> 

You were right. It's needed to explicitly set the device up after the
process reading from /dev/tun0 has connected.
The man page for tun(4) should probably note that explicitly.

Now I can ping 192.168.2.2 but ping 192.168.2.1 (local endpoint of point
to point connection) gives still no reply (but this is not that
important).

-- 
:wq Claudio