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Instead of using the CIDR notation to get the value of the netmask, we’ve got its value 255.255.255.0.

In this example, the netmask is one of the values returned. TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 The possible values for scope are outlined in the following. So, we are talking about the 'scope' of the interface here, a term you could just google, which might end you up here, explaining. global' inet xx.xx.xx.xx/24 brd xx.xx.xx.255 scope global eth0. Inet6 fe80::129e:c85e:f067:e115/64 scope link noprefixroute 4. Did it occur to you to just run the line ip addr grep 'inet. In the following examples, the -a option specifies which version of IP to show, and grep filters the results on the last command: ~$ ip -4 aġ: lo: mtu 65536 state UNKNOWN qlen 1000 Let’s look at other variations of how we can run this command to get the netmask. The IPv6 address is also postfixed with /64. It also shows that our first three octets are used.

The /24 is the CIDR notation and it indicates the value of our netmask. On interface enp0s3, the IP address is postfixed with a /24. In the above example, the ip addr show command displays the network information, including the IP address, the netmask, broadcast, etc. You could test it by setting this attribute to 1 and flap the link again. Another benefit of ULAs is you don’t need an allocation of global unicast IPv6 addresses just for mucking around on your LAN. This is probably due to the default setting of the attribute keepaddrondown. Two, you control ULAs choose your own addresses, make subnets, and they are routable. Link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00Ģ: enp0s3: mtu 1500 qdisc fq_codel state UP group default qlen 1000 One, link-local addresses are not routable, so you can’t cross subnets. Let’s run ip and find the netmask: $ ip addr showġ: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 When we run the ip command, among the information displayed is the netmask. We use the ip command to create or show network information such as ip address and routing.