---
name: "npd6"
section: "8"
platform: "linux"
package: "npd6"
version: "1.1.0-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/npd6"
---

# npd6(8)

neighbor proxy daemon ipv6

## NAME

npd6 - neighbor proxy daemon ipv6

## SYNOPSIS

**npd6** **\[ -hvcdDf\]** **\[ -c** *configfile* **\]** **\[ -l** *logfile* **\]**

## DESCRIPTION

npd6 is a daemon which listens on nominated interfaces for IPv6 Neighbor Solicitations which match defined prefixes. It will answer them with an appropriate Neighbor Advertisement.

npd6 is configured using a config file (default /etc/npd6.conf) and also has a number of cli options to enable various levels of logging, debug, etc.

Please read the man page for the config file for much more information.

## OPTIONS

- **-h, --help**

  Displays short usage summary and then exits.

- **-v, --version**

  Displays the version of npd6 and then exits.

- **-c** *configfile***, --config** *configfile*

  Alternate config file. Default is /etc/npd6.conf See [npd6.conf(5)](/npd6.conf/5.md).

  - **-d, --debug**

    Enable debug logging - moderate.

  - **-D, --debug2**

    Enable more debug logging - lots.

  - **-f, --foreground**

    Run npd6 in the foreground, staying attached to the terminal. Default is that it daemonizes otherwise. Typically used for debugging, etc.

- **-l** *logfile***, --logfile** *logfile*

  The default is that npd6 logs via syslog. This parameter tells it to log directly to the nominated file.

## FILES

*/etc/npd6.conf*

Default configuration file.

*/var/log/npd6*

Default log file (if used)

## SEE ALSO

[npd6.conf(5)](/npd6.conf/5.md)

## BUGS

No known bugs - Please report them to npd6Project@gmail.com

## AUTHOR

Sean Groarke (sgroarke@gmail.com)