Merge branch 'issue-261_buster' into 'buster-testing'

Fixes #261 - Adds detection of NAT64 environments.

See merge request !125
16 jobs for issue263_buster in 39 minutes and 4 seconds (queued for 6 seconds)
Status Job ID Name Coverage
  Package
passed #12248
docker
sympl-backup

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passed #12247
docker
sympl-core

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passed #12249
docker
sympl-cron

00:01:16

passed #12250
docker
sympl-dns

00:01:15

passed #12252
docker
sympl-firewall

00:01:24

passed #12253
docker
sympl-ftp

00:01:18

passed #12251
docker
sympl-mail

00:01:16

passed #12255
docker
sympl-monit

00:01:06

passed #12256
docker
sympl-mysql

00:01:04

passed #12257
docker
sympl-updater

00:01:04

passed #12254
docker
sympl-web

00:01:12

passed #12258
docker
sympl-webmail

00:01:03

 
  Publish
passed #12259
docker
Build Repo

00:00:35

 
  Install
passed #12260
vbox:buster
Clean Install

00:10:45

 
  Upgrade
passed #12262
vbox:buster delayed
Upgrade Stable

00:11:36

passed #12261
vbox:buster
Upgrade Testing

00:12:20