What is the address format for IPv6?
The IPv6 address size is 128 bits. The preferred IPv6 address representation is: x:x:x:x:x:x:x:x , where each x is the hexadecimal values of the eight 16-bit pieces of the address. IPv6 addresses range from 0000:0000:0000:0000:0000:0000:0000:0000 to ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff .
What IPv6 prefix is used by devices on the same network to communicate?
Together, these two groupings are the IPv6 prefix . The device address in the example is 0000:0000:0000:0000 . Each device in the network has a unique device address. But, the network address and subnet address portions of the IPv6 address are the same for every device in the network.
How are IPv4 addresses written in hosts file?
Write it the same way IPv4 would be written. The hosts file format consists of lines, each of which contains the IP address, followed by whitespace, then one or more hostnames, also separated by whitespace. Nothing changes when the address is an IPv6 address instead of a legacy IPv4 address. The format is the same.
What is the format of the / etc / hosts file?
Format of /etc/hosts File. The /etc/hosts file is an ordinary text file. Two types of lines are permitted: Empty Lines; Host name definitions; Lines may be intermingled as needed. Comments begin with a hash symbol (#) and continue to the end of the line. Associating Host Names And IP Addresses
Why do IPv6 addresses have their own formatting system?
IPv6 addresses have their own formatting system because they represent an 128-bit addressing space: that’s 16 octets, which would be extremely unwieldly! As well, at this time there are a lot of runs of embedded zeroes, so it’s handy to be able to compress those out.
How to create a hosts file in Linux?
This manual page describes the format of the /etc/hosts file. This file is a simple text file that associates IP addresses with hostnames, one line per IP address. For each host a single line should be present with the following information: IP_address canonical_hostname [aliases…] The IP address can conform to either IPv4 or IPv6.