Tag Archives: IPv6

Internet Protocol v6

Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP) which was developed by the Internet Engineering Task Force (IETF) to deal with the long-anticipated problem of IPv4 address exhaustion. IPv6 is intended to replace IPv4. IPv6 uses a 128-bit address, theoretically allowing 2128, or approximately 3.4×1038 addresses. The actual number is slightly smaller, as multiple ranges are reserved for special use or completely excluded from use. The total number of possible IPv6 address is more than 7.9×1028 times as many as IPv4, which uses 32-bit addresses and provides approximately 4.3 billion addresses. The two protocols are not designed to be interoperable, complicating the transition to IPv6. However, several IPv6 transition mechanisms have been devised to…

Continue Reading

Setup IPv6 NAT on OpenWRT Router

Introduction This tutorial is a HowTo for setting up IPv6 NAT on OpenWRT router.   The information of the environment is listed below. Network Environment: China Education and Research Network Center with dual stack IPv6 Network Device: NETGEAR R6100 (128M RAM) Firmware Version: OpenWrt Chaos Calmer 15.05 Install Dependencies for OpenWRT Login to OpenWRT router via SSH and run following commands: Setup IPv6 for Local-area Network Edit /etc/config/network, and add following lines in config interface 'lan': Remove following lines if exists: Edit /etc/config/dhcp, and change the content in  config dhcp 'lan' as follows: Setup Gateway for IPv6 Network Add following lines to /etc/firewall.user for forwarding IPv6 traffic: Setup up IPv6 gateway by creating file in /etc/hotplug.d/iface/90-ipv6 and adding following lines to the file: Then, add execute permission…

Continue Reading
Contact Us
  • Room 311, Zonghe Building, Harbin Institute of Technology
  • cshzxie [at] gmail.com