ipv6 notes

simple basics:

• The Internet uses IPv4 addresses to find computers and devices
• Growing number of servers and computers and devices
• Running out of IPv4 addresses, so
• Need to slowly switch over to IPv6 system.

linux / digitalocean
to show ipv6 interfaces
ip -6 addr show eth0

testing commands:
sudo netstat -tulpna | grep nginx
should have tcp and tcp6

nginx
to refresh settings
sudo nginx -s reload

sudo nano /etc/nginx/sites-available/default
to add in
listen 80;
listen [::]:80;


nginx -V
should have –with-ipv6

sudo nano /usr/local/nginx/conf/nginx.conf

test sites
http://ipv6-test.com/validate.php
online-ipv6-ping
ipv6test.google.com
ipv6.google.com

Asus RT-N56U with Singtel Home Fibre
IPv6 > Tunnel 6rd > just leave it all at default settings and save.
DHCP Enable
Tunnel MTU 1280
Tunnel TTL 255
IPv6 DNS1 2400:d800::1
IPv6 DNS2 2400:d800::2
Router Advertisement Enable
My devices now are assigned 1x IPv4 address, and 2x IPv6 address each. Why?