Once converted into dotted decimal, you’ll get 65.54.227.120 (4136e378 in hexadecimal). The 4136:e378 part refers to the Teredo server IPv4 address. You can always tell whenever you’re looking at a Teredo IPv6 address because the first 16 bits is always 2001 in hexadecimal (as specified in RFC 4380).įor example, you have 2001:0000:4136:e378:8000:63bf:3fff:fdd2 as your Teredo IPv6 address. What is embedded inside the Teredo IPv6 address?įirst of all, we’ll take a look at what’s inside the Teredo IPv6 address. It also does the encapsulation/decapsulation of the data between the Teredo clients and other IPv6 hosts. The Teredo relay which does the actual work of advertising the route for the Teredo IPv6 prefix (2001::/32) to other IPv6 hosts.The Teredo server to enable the Teredo client to detect what type of NAT they are behind as part of the initial configuration.How does Teredo work?įor the Teredo tunneling mechanism to work, there are a few key components required. By using Teredo, IPv6 packets can be transmitted over an IPv4 network even if the client is behind a NAT. In this article, we’ll discuss more about Teredo which is an IPv6 tunneling mechanism. The 2 types of commonly used tunnels are 6to4 and Teredo. One of the methods is via an IPv6 tunnel. We have previously covered briefly how an IPv4 network can communicate with an IPv6 network.
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