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Posted

Hello

 

I encounter a problem when I run the TCPDUMP command Here is the error

 

eth0: SIOCETHTOOL(ETHTOOL_GLINK) ioctl failed: Device or resource busy

 

Work like a charm with Radxa Debian OS, but on two Armbian same problem.

 

Someone knows why ?

 

Thanks

Posted (edited)

Collecting info and sending to paste.armbian.com, wait...
/usr/bin/armbianmonitor: line 976: iostat: command not found
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Error</title>
</head>
<body>
<pre>Cannot POST /log</pre>
</body>
</html>

Edited by Neooostef
Posted (edited)

armbianmonitor don't return error

 

When i'm use "tcpdump" or "arp-scan" same error

neooo@radxa-zero3:~$ tcpdump host 192.168.1.1
tcpdump: end1: SIOCETHTOOL(ETHTOOL_GLINK) ioctl failed: Device or resource busy

 

But when i specify interface, it's work

neooo@radxa-zero3:~$ sudo tcpdump -i wlan0 host 192.168.1.1
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on wlan0, link-type EN10MB (Ethernet), snapshot length 262144 bytes
23:25:56.936639 IP radxa-zero3.47793 > _gateway.domain: 57863+ [1au] A? whatismyip.akamai.com. (50)
23:25:56.937550 IP radxa-zero3.52220 > _gateway.domain: 16210+ [1au] AAAA? whatismyip.akamai.com. (50)
23:25:56.942649 IP _gateway.domain > radxa-zero3.52220: 16210 2/1/1 CNAME whatismyip.akamai.com.edgesuite.net., CNAME a1524.g.akamai.net. (179)

 

I have trying to disable end1 but not work 

neooo@radxa-zero3:~$ sudo ip link set end1 down
neooo@radxa-zero3:~$ tcpdump host 192.168.1.1
tcpdump: end1: SIOCETHTOOL(ETHTOOL_GLINK) ioctl failed: Device or resource busy
neooo@radxa-zero3:~$ sudo nmcli device disconnect end1
Device 'end1' successfully disconnected.
neooo@radxa-zero3:~$ sudo nmcli device status
DEVICE         TYPE      STATE                                  CONNECTION
wlan0          wifi      connected                              netplan-wlan0-Neooostef6
br0            bridge    connecting (getting IP configuration)  netplan-br0
lo             loopback  connected (externally)                 lo
end1           ethernet  disconnected                           --
p2p-dev-wlan0  wifi-p2p  disconnected                           --
neooo@radxa-zero3:~$ tcpdump
tcpdump: end1: SIOCETHTOOL(ETHTOOL_GLINK) ioctl failed: Device or resource busy

 

i'm trying to Identify the processes using the interface, but no process

neooo@radxa-zero3:~$ sudo lsof | grep end1
neooo@radxa-zero3:~$

 

I am very destabilized, you have an idea?

Edited by Neooostef

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