It means that the checksum doesn’t need to be recalculated at every router hop. In that sense, getting rid of IP-level checksum is beneficial. IPv4 includes checksum fields and IPv6 doesn’t. Most of the technology already has checksum and error-control capabilities.IPv4 is a numeric addressing method whilst IPv6 uses an alphanumeric addressing method. This means IPv6 also includes letters compared to IPv4 which are all numbers.IPv4 binary bits are separated by a dot whereas IPv6 binary bits are separated by a colon. Typically IPv4 addresses look like this 51.195.100.161 and IPv6 addresses typically look like this 2a0d:5600:11:5:2cb::1.IPv4 has a 32b IP address whereas IPv6 has a 128b IP address. This means that the number of IPv6 addresses is 10 28 (79 228 162 514 264 337 593 543 950 336) times larger than the number of IPv4 addresses.IPv6 is the IP address format designed to supplement this and other shortcomings. Nowadays most smart devices have their own public IP addresses and this number is not large enough anymore. It allows for 2 32 or 4.3 billion unique IP addresses. IPv4 stands for “Internet Protocol version 4” and is the original format for the IP addresses. How to connect with IPv4 or IPv6 to VPN?.
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