Tricks and tips for everyone


What is IPv4/IPv6 dual stack?

What is IPv4/IPv6 dual stack?

Dual stack means that devices are able to run IPv4 and IPv6 in parallel. It allows hosts to simultaneously reach IPv4 and IPv6 content, so it offers a very flexible coexistence strategy.

Can you have both IPv4 and IPv6?

IPv4 and IPv6 must coexist for some number of years, and their coexistence must be transparent to end users. If an IPv4-to-IPv6 transition is successful, end users should not even notice it. A dual-stack device is a device with network interfaces that can originate and understand both IPv4 and IPv6 packets.

Why does my router have 2 IPv6 addresses?

A device generates new 64 bits every once in a while and uses that in the IPv6 address. Because new addresses are generated regularly the addresses are marked as temporary . A device can have multiple privacy extension addresses if the system is still using an old address when a new address is being generated.

What is router dual stack?

A dual stack network is a network in which all of the nodes are both IPv4 and IPv6 enabled. This is especially important at the router, as the router is typically the first node on a given network to receive traffic from outside of the network.

What is dual stack configuration?

Dual Stack Overview A network node that supports both IPv4 and IPv6 is called a dual stack node. A dual stack node configured with an IPv4 address and an IPv6 address can have both IPv4 and IPv6 packets transmitted.

What is dual stack routing?

Why do I have 3 IPv6 addresses on my wifi?

Of the two public addresses, the first one is SLAAC (always the same, and resembles the one in fe80), the other one is the “privacy” one (changes every X hours). If you let your device on long enough, one of the addresses will “expire” and you will get a new privacy address.

How can you tell if two IPv6 addresses are on the same network?

If the prefix lengths are different then they are not on the same network. If the prefix lengths are the same then take the length ( very probably 64, so let’s assume that) and compare the first 64 bits of both addresses with each other. If they are the same then they are both on the same network.

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