How do I get an IPv6 address in Java

Internet Deactivate IPv6 - this is how it works

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IPv6 offers a number of advantages over the IPv4 standard and should therefore only be deactivated in special cases. But first, an explanation of the terms: IPv4 are the "classic" IP addresses according to the 192.168.1.1 scheme, as you know them from your home network. This address type is only 32 bits long, so it only offers 4 billion possible addresses. Since the Internet is a huge network and there are now well over 4 billion devices connected, IPv4 is no longer sufficient. The successor protocol IPv6 has 128-bit addressing, i.e. mathematically supports a VMany possible IP addresses (340 sextillion, a number with 36 zeros!), which makes IPv4 crutch technologies such as the annoying network address translation (NAT) behind routers and all sorts of other technical hurdles superfluous. So IPv6 is the future - but it can cause difficulties here and there at the moment. Therefore, if you have problems connecting to websites or services, it can make sense to (still) deactivate the technology.

The advantages of IPv6

IPv6 has some tangible advantages over IPv4, which is why we do not recommend deactivating IPv6, except in special cases. In addition to the significantly larger address range, there are other practical advantages:

  • With IPv6 is no NAT necessarywhich enables a direct point-to-point connection between network devices. Problems that NAT can cause in routers are thus eliminated.
  • IPv6 makes network management easier despite more complex addresses: DHCP works more efficientwhich makes the automatic assignment of IP addresses more reliable. In short: the connection to the network is faster.
  • The routing itself will also work acceleratedbecause unnecessary network traffic is reduced. This means that the IPv6 connection is theoretically faster than the IPv4 connection.
  • IPv6 is newer and smarter as IPv4: There are integrated quality-of-service functions and automatic prioritization of certain data packets. This is especially important when streaming and playing online.
  • IPv6 supports larger data packets.

Deactivate IPv6 under Windows 10: Here's how it works

IPv6 is integrated in Windows 10 and only needs to be switched on or off. Microsoft offers a number of wizards for this, but they are quite tricky to use. It is easier via the registry:

Deactivate IPv6 on the FritzBox

In the past, IPv6 caused speed problems with some Internet providers or loading delays on some websites. For example, Facebook is sometimes excruciatingly slow due to IPv6. Reason enough to deactivate IPv6 as a test on the FritzBox router:

Use IPv6 in the home network

Basically, it makes sense both under Windows and on the FritzBox to keep IPv6 active. Also, so that the router and system are equipped for future developments. In order to be able to use the full power of IPv6, the function not only has to be active on both systems: You should also make some settings in the FritzBox.