Leonardo Lemos leolemos

Provider	IPv4	IPv6	DNS Over HTTPS	DNSSEC
CleanBrowsing	185.228.168.9 185.228.169.9	2a0d:2a00:1::2 2a0d:2a00:2::2	https://doh.cleanbrowsing.org/doh/security-filter/	Yes
Cloudflare	1.1.1.1 1.0.0.1	2606:4700:4700::1111 2606:4700:4700::1001	https://1.1.1.1/dns-query	Yes
Google DNS	8.8.8.8 8.8.4.4	2001:4860:4860::8888 2001:4860:4860::8844	https://dns.google.com/resolve	Yes
Hurricane Electric	74.82.42.42	2001:470:20::2
Omnispring	208.111.1.1 208.111.1.2			Yes
[Private Internet Access](https://helpdesk.privateinternetaccess.com/hc/en-us/articles/219460397-How-to-change-DNS-settings

IPv6 Address Space

::/128               Unspecified Address
  ::1/128            Loopback Address
  ::ffff:0:0/96      IPv4-mapped Address
64:ff9b::/96         IPv4-IPv6 Translate
64:ff9b:1::/48       IPv4-IPv6 Translate
100::/64             Discard-Only Address Block
0200::/7             OSI NSAP-mapped prefix set (deprecated)

DNS:

IPv4 Addr	IPv6 Addr	ASn	Political Region	Loc	Svc	Org
8.8.8.8	2001:4860:4860::8888	AS15169	US	Worldwide (Anycast)	Google Public DNS	Google
8.8.4.4	2001:4860:4860::8844	AS15169	US	Worldwide (Anycast)	Google Public DNS	Google
1.1.1.1	2606:4700:4700::1111	AS13335	US	Worldwide (Anycast)	Cloudflare-DNS	Cloudflare/APNIC
1.0.0.1	2606:4700:4700::1001	AS13335	US	Worldwide (Anycast)	Cloudflare-DNS	Cloudflare/APNIC
95.85.95.85	2a03:90c0:999d::1	AS199524	EU	*W

Image

https://dev.openwrt.org/ticket/20757#ticket

https://forum.openwrt.org/viewtopic.php?pid=300231#p300231

https://wiki.openwrt.org/toh/tp-link/tl-wr841nd

Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.

Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.

Falsehoods

There are always 24 hours in a day.
February is always 28 days long.
Any 24-hour period will always begin and end in the same day (or week, or month).

	# should works on any cloud-init enabled hypervisor (openstack.. )

	# start from a normal ubuntu 20.04 install as minimal was not available for ARM64
	# Since ARM64 machines has higher RAM, Shrinking is desired but not necessary. Instead we will increase tmpfs to 1700MB

	# Getting root (if sudo -i doesn't work then set a root password beforehand using 'sudo passwd root'

	sudo -i

	# make sure we are on the highest kernel, so we can delete all the others ...

	--no-mtime
	--no-call-home
	# --ignore-errors

	-f "bestvideo[height>=1080]+251/bestvideo[height>=1080]+bestaudio/bestvideo[height>=720]+251/bestvideo[height>=720]+bestaudio/137+bestaudio/136+bestaudio/bestvideo+bestaudio"
	# Note that I output to an MKV container, despite the fact that shitty devices will not play some files
	# or still don't support Opus, it is the highest quality available: http://opus-codec.org/comparison/
	--merge-output-format mkv

	# If you need Mac compatible MP4 uncomment the following two lines instead of the ones above. It's usually a step under max quality, but this yields true mp4 files:

	# Put this file under /etc/spamassassin/ and run an sa-update or reload amavis etc.
	#
	#--------------------------------------------------
	# The only RBL I trust, UCEPROTECT1 (single IP, not IP-ranges or entire ISPs) http://uceprotect.net
	#--------------------------------------------------
	header RCVD_IN_UCEPROTECT1 eval:check_rbl_txt('uceprotect1', 'dnsbl-1.uceprotect.net')
	describe RCVD_IN_UCEPROTECT1 Listed in dnsbl-1.uceprotect.net
	tflags RCVD_IN_UCEPROTECT1 net
	score RCVD_IN_UCEPROTECT1 1.8

	# IPv6 Configuration
	# -> note that I have disabled ip6 for our internet-connection (wan/eth0) because
	# -> my upstream/ISP (still) does not do IPv6. The rest, even localhost, does ip6 stuff.
	net.ipv6.conf.all.disable_ipv6 = 0
	net.ipv6.conf.default.disable_ipv6 = 0
	net.ipv6.conf.lo.disable_ipv6 = 0
	net.ipv6.conf.eth0.disable_ipv6 = 1
	net.ipv6.conf.wan.disable_ipv6 = 1

	# Packet Forwarding