As I'd moved from TrueNAS to Ubuntu, I was moving most everything to a Docker container, and Transmission (using OpenVPN) was no different.

Under TrueNAS, I'd used a jail (https://www.nodinrogers.com/posts/2020-11-07-freenas-transmission-jail-with-openvpn/), but jails don't exist in Ubuntu, so Docker is the way to go. …

While doing some troubleshooting on my home lab, I was trying to ping from one device to another device, both configured with IPv6, and only IPv6, addresses.

I was using tcpdump to attempt to capture the ICMP echo-requests (only), which in the IPv4 world, I would use this tcpdump syntax:

sudo tcpdump -nni ens192 …

I finally ironed out all of the issues with my KVM server, and to eliminate any of the left over junk, for lack of a better phrase, I nuked the server and reinstalled Ubuntu 20.04. For the record, junk consisted of various packages, their configurations, and system modifications, that I'd tried out in deciding how to …

I needed a quick SFTP server, and did a short post about it previously.

However, I wanted the ability to run a Docker container that wasn't on my NAS, so I had to mount the NFS share from within Docker.

Using this Docker composer file did the trick:

version: "3.2"

services:
  sftp:
    image: atmoz/sftp …

I had a couple of files I needed to provide to a friend on a regular basis.

• The files were too big to email.
• The files would change every week.
• They were created/stored on my NAS.
• Neither of us wanted to go through the hassle of using Dropbox/Google Drive/etc.

Simple solution was for me to create a simple Docker …

The purpose was to have a Linux box act as a simple router.

Devices:

• Device1, configured with a 10.10.10.10 IP.
• Device2, which will be our router, configured with 2 interfaces: 10.10.10.1 and 192.168.1.245.
• Device3, which is my Internet-facing router, with an internal IP of 192.168.1.1

The router is going to be …