# Configuring extras:tun/tap on ubuntu 12.04

**URL:** <https://www.ruby-forum.com/t/configuring-extras-tun-tap-on-ubuntu-12-04/235857>\
**Category:** GNU Radio\
**Created:** [July 20, 2013, 1:23am UTC](https://www.ruby-forum.com/t/configuring-extras-tun-tap-on-ubuntu-12-04/235857 "2013-07-20T01:23:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![alcina](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a587f6/32.png) [@alcina](https://www.ruby-forum.com/u/alcina)\
**Post date:** [July 20, 2013, 1:23am UTC](https://www.ruby-forum.com/t/configuring-extras-tun-tap-on-ubuntu-12-04/235857/1 "2013-07-20T01:23:35Z")

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Hi  
I have a problem with configuring the gr0 interface for gnuradio on  
ubuntu 12.04.

The command  
$sudo ifconfig gr0 192.168.200.1

does not work and return back error of

SIOCSIFADDR: No such device  
gr0: ERROR while getting interface flags: No such device

I have tried a number of methods from the linux community but non of  
them  
works.

Does any one in gnuradio community have any clue about it.

Regards

---

<div class="post-metadata">

**Author:** ![GNU\_radio](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/e0b2c6/32.png) [@GNU\_radio](https://www.ruby-forum.com/u/GNU_radio)\
**Post date:** [July 20, 2013, 6:37am UTC](https://www.ruby-forum.com/t/configuring-extras-tun-tap-on-ubuntu-12-04/235857/2 "2013-07-20T06:37:19Z")

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Hi,

On 07/20/2013 01:22 AM, GNU radio wrote:

> gr0: ERROR while getting interface flags: No such device
> 
> I have tried a number of methods from the linux community but non of  
> them works.
> 
> Does any one in gnuradio community have any clue about it.

This commands work for me:

> <https://github.com/bastibl/gr-ieee802-11/blob/maint-3.10/apps/rx_demo.sh#L22>

Best,  
Bastian

–  
Dipl.-Inform. Bastian B.  
Institute of Computer Science  
University of Innsbruck, Austria  
Phone: +43 512 507-53288 / Fax: -53079  
[http://ccs.uibk.ac.at/~bloessl/](http://ccs.uibk.ac.at/~bloessl/)