---
name: "dpauxmon"
section: "1"
platform: "linux"
package: "wireshark-cli"
version: "4.7.4-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/dpauxmon"
---

# dpauxmon(1)

Provide interfaces to capture DisplayPort AUX channel data.

## NAME

dpauxmon - Provide interfaces to capture DisplayPort AUX channel data.

## SYNOPSIS

**dpauxmon** \[ **--help** \] \[ **--version** \] \[ **--extcap-interfaces** \] \[ **--extcap-dlts** \] \[ **--extcap-interface**=\<interface\> \] \[ **--extcap-config** \] \[ **--extcap-capture-filter**=\<capture filter\> \] \[ **--capture** \] \[ **--fifo**=\<path to file or pipe\> \] \[ **--interface\_id**=\<Interface ID to capture\> \]

**dpauxmon** **--extcap-interfaces**

**dpauxmon** **--extcap-interface**=\<interface\> **--extcap-dlts**

**dpauxmon** **--extcap-interface**=\<interface\> **--extcap-config**

**dpauxmon** **--extcap-interface**=\<interface\> **--fifo**=\<path to file or pipe\> **--capture** **--interface\_id=interface\_id**

## DESCRIPTION

**dpauxmon** is an extcap tool that can capture DisplayPort AUX channel data from linux kernel drivers using the generic netlink interface.

Supported interfaces:

 1\. dpauxmon

## OPTIONS

- \--help

  Print program arguments.

- \--version

  Print program version.

- \--extcap-interfaces

  List available interfaces.

- \--extcap-interface=\<interface\>

  Use specified interfaces.

- \--extcap-dlts

  List DLTs of specified interface.

- \--extcap-config

  List configuration options of specified interface.

- \--capture

  Start capturing from specified interface and save it in place specified by --fifo.

\--fifo=\<path to file or pipe\>

Save captured packet to file or send it through pipe.

\--interface\_idt=\<interface id\>

The interface for capture.

## EXAMPLES

To see program arguments:

```
dpauxmon --help
```

To see program version:

```
dpauxmon --version
```

To see interfaces:

```
dpauxmon --extcap-interfaces
```

Only one interface (dpauxmon) is supported.

**Example output**\

```
interface {value=dpauxmon}{display=DisplayPort AUX channel capture}
```

To see interface DLTs:

```
dpauxmon --extcap-interface=dpauxmon --extcap-dlts
```

**Example output**\

```
dlt {number=275}{name=dpauxmon}{display=DisplayPort AUX channel monitor DLT}
```

To see interface configuration options:

```
dpauxmon --extcap-interface=dpauxmon --extcap-config
```

**Example output**\

```
dpauxmon --extcap-interface=dpauxmon --extcap-config
arg {number=0}{call=--interface_id}{display=Interface Id}
    {type=unsigned}{tooltip=The Interface Id}
    {required=true}
```

To capture:

```
dpauxmon --extcap-interface=dpauxmon --fifo=/tmp/dpauxmon.pcap --capture --interface_id 0
```

## SEE ALSO

[wireshark(1)](/wireshark/1.md), [tshark(1)](/tshark/1.md), [dumpcap(1)](/dumpcap/1.md), [extcap(4)](/extcap/4.md)

## NOTES

**dpauxmon** is part of the **Wireshark** distribution.  The latest version of **Wireshark** can be found at  \<https://www.wireshark.org\>.

HTML versions of the Wireshark project man pages are available at  \<https://www.wireshark.org/docs/man-pages\>.

## AUTHORS

**Original Author**\
 Dirk Eibach \<dirk.eibach\[AT\]gdsys.cc\>