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#1 2013-05-21 14:20:38

railmaniac
Member
Registered: 2010-04-24
Posts: 24

[SOLVED] ip addr shows whole lot of new interfaces

Hi,

After I restarted following the most recent kernel upgrade (3.9.2 -> 3.9.3) I am seeing a whole lot of network interfaces, named nrX and roseX, as shown below:

% ip link show                          
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
(lines skipped)
8: virbr1-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr1 state DOWN mode DEFAULT qlen 500
    link/ether 52:54:00:9e:16:c7 brd ff:ff:ff:ff:ff:ff
9: nr0: <NOARP> mtu 236 qdisc noop state DOWN mode DEFAULT 
    link/generic 00:00:00:00:00:00:00 brd 00:00:00:00:00:00:00
10: nr1: <NOARP> mtu 236 qdisc noop state DOWN mode DEFAULT 
    link/generic 00:00:00:00:00:00:00 brd 00:00:00:00:00:00:00
11: nr2: <NOARP> mtu 236 qdisc noop state DOWN mode DEFAULT 
    link/generic 00:00:00:00:00:00:00 brd 00:00:00:00:00:00:00
12: nr3: <NOARP> mtu 236 qdisc noop state DOWN mode DEFAULT 
    link/generic 00:00:00:00:00:00:00 brd 00:00:00:00:00:00:00
13: rose0: <NOARP> mtu 249 qdisc noop state DOWN mode DEFAULT 
    link/rose 00:00:00:00:00 brd 00:00:00:00:00
14: rose1: <NOARP> mtu 249 qdisc noop state DOWN mode DEFAULT 
    link/rose 00:00:00:00:00 brd 00:00:00:00:00
15: rose2: <NOARP> mtu 249 qdisc noop state DOWN mode DEFAULT 
    link/rose 00:00:00:00:00 brd 00:00:00:00:00
16: rose3: <NOARP> mtu 249 qdisc noop state DOWN mode DEFAULT 
    link/rose 00:00:00:00:00 brd 00:00:00:00:00
17: rose4: <NOARP> mtu 249 qdisc noop state DOWN mode DEFAULT 
    link/rose 00:00:00:00:00 brd 00:00:00:00:00
18: rose5: <NOARP> mtu 249 qdisc noop state DOWN mode DEFAULT 
    link/rose 00:00:00:00:00 brd 00:00:00:00:00
19: rose6: <NOARP> mtu 249 qdisc noop state DOWN mode DEFAULT 
    link/rose 00:00:00:00:00 brd 00:00:00:00:00
20: rose7: <NOARP> mtu 249 qdisc noop state DOWN mode DEFAULT 
    link/rose 00:00:00:00:00 brd 00:00:00:00:00
21: rose8: <NOARP> mtu 249 qdisc noop state DOWN mode DEFAULT 
    link/rose 00:00:00:00:00 brd 00:00:00:00:00
22: rose9: <NOARP> mtu 249 qdisc noop state DOWN mode DEFAULT 
    link/rose 00:00:00:00:00 brd 00:00:00:00:00

I know the interfaces till #8, but everything which follows is new to me.

Can any tell me what they are, why I'm seeing them suddenly and should I be worried?

Last edited by railmaniac (2013-05-22 02:33:13)


Thanks,
railmaniac

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#2 2013-05-21 14:36:06

WonderWoofy
Member
From: Los Gatos, CA
Registered: 2012-05-19
Posts: 8,414

Re: [SOLVED] ip addr shows whole lot of new interfaces

I have never seen such a thing personally.  But I know that some cards can have more functionality under linux, and some have better support for those functions.  So maybe the kernel update brought about new changes that opened up some functionality within your hardware?  I really have no idea and am just guessing.  What kind of hardware do you have?

Apparently this has happened before to many others.  Check this out (justone of a number I found searching for "rose0 interface"):
http://www.redhat.com/archives/rhl-deve … 00008.html

Also do "modinfo rose".  The others I didn't really search for, but it would seem that you are not in any danger or anything.

Last edited by WonderWoofy (2013-05-21 14:40:14)

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#3 2013-05-21 15:32:56

progandy
Member
Registered: 2012-05-17
Posts: 5,280

Re: [SOLVED] ip addr shows whole lot of new interfaces

WonderWoofy wrote:

The others I didn't really search for, but it would seem that you are not in any danger or anything.

nr? are netrom interfaces and use the netrom module. (disable alias net-pf-6 if you don't need it.)

Last edited by progandy (2013-05-21 15:36:04)


| alias CUTF='LANG=en_XX.UTF-8@POSIX ' |

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#4 2013-05-21 17:31:06

railmaniac
Member
Registered: 2010-04-24
Posts: 24

Re: [SOLVED] ip addr shows whole lot of new interfaces

Thanks for the quick assist guys. This seems alright, but it's not something I'd use and it's cluttering out my ip addr, so I think I'll blacklist them.

For those searching in the future, here's what I did:

# echo alias net-pf-6 off > /etc/modprobe.d/blacklist-radio.conf
# echo alias net-pf-11 off >> /etc/modprobe.d/blacklist-radio.conf

Aliases are based on the output of modinfo netrom and modinfo rose, respectively.

Before that I did a modprobe -r and verified they are gone.


Thanks,
railmaniac

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#5 2013-05-21 17:31:37

railmaniac
Member
Registered: 2010-04-24
Posts: 24

Re: [SOLVED] ip addr shows whole lot of new interfaces

How do I make this [solved]?


Thanks,
railmaniac

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#6 2013-05-21 18:01:04

jasonwryan
Anarchist
From: .nz
Registered: 2009-05-09
Posts: 30,426
Website

Re: [SOLVED] ip addr shows whole lot of new interfaces

You edit your first post smile


Arch + dwm   •   Mercurial repos  •   Surfraw

Registered Linux User #482438

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#7 2013-05-21 22:00:37

fukawi2
Ex-Administratorino
From: .vic.au
Registered: 2007-09-28
Posts: 6,231
Website

Re: [SOLVED] ip addr shows whole lot of new interfaces

http://www.redhat.com/archives/rhl-devel-list/2007-November/msg00017.html wrote:

"...X.25 protocol for use over (low speed) radio links."

Possibly related to RFC-1149 tongue

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