valmka.blogg.se - Linux get interface mac address

Example, Im trying to do this: 1) Get interface name with mac address '68:05:ca:0e:74:c4'.

In theory that should be all you need, though at some point something broke in the kernel and it would cause it to.

You should see yours listed, along with the MAC address for other installed network interfaces. Right now its easy to change the name with this example: ip link set eth1 name However I want to have a script or command where I have it auto set the link name based on the mac address. You can use macvlan to create multiple virtual interfaces with different MAC addresses. You need to iterate over all the available interfaces on your machine, and use ioctl with SIOCGIFHWADDR flag to get the mac address.

For a list of all default gateways, use mezgani's answer, duplicated (and slightly simplified) here: /sbin/ip route | awk '/^default/ "Īs noted in the comments, this has the advantage of setting a sensible exit-code, which may be useful in a broader programmatic context. ip a In the screenshot below, we have highlighted our MAC address for the enp0s3 interface.