[FS#620] ip-full: monitor command throws error

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - André Lange (AndreL) 

Attached to Project - LEDE Project
Summary - ip-full: monitor command throws error
Task Type - Bug Report
Category - Packages
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Medium
Priority - Very Low
Reported Version - lede-17.01
Due in Version - Undecided
Due Date - Undecided
Details - Hi,

I would like to port my project __ip6neigh__ https://github.com/AndreBL/ip6neigh to LEDE. The following issue was found when testing it in LEDE (17.01.0, r3205-59508e3) VirtualBox x64 image and **ip-full** package with details below:

root at LEDE:~# opkg info ip-full
Package: ip-full
Version: 4.4.0-8
Depends: libc, libnl-tiny
Provides: ip
Status: install user installed
Section: net
Architecture: x86_64
Size: 137862
Filename: ip-full_4.4.0-8_x86_64.ipk
Description: Routing control utility (Full)
Installed-Time: 1488935742

When trying to run the **ip -6 monitor** command, and error is thrown like shown below:

root at LEDE:~# ip -6 mon neigh dev br-lan
**open("/proc/self/ns/net"): No such file or directory**
root at LEDE:~# ip monitor
**open("/proc/self/ns/net"): No such file or directory**
root at LEDE:~#

I would like to contribute with the ip6neigh script on LEDE. The monitor command is essential to make it work there.

Regards,
André

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=620