Secondary Mac Address - ( How To Export Data ) - Extension Attribute

This assumes that en1 will be consistently the same interface you expect. Just be aware of that.

I don't know if hardcoding en1 or any other port id is necessarily a good idea. With some older models only having a built in Ethernet and some not having one at all, it might be better to get whatever the second "en" port is in the list and using that. Generally speaking, en0 will be Wi-Fi on most newer models and en1 would be something like a Thunderbolt connection. On older models, en0 will be Built-In Ethernet and en1 will be something else, but most times, you want the second en port since en0 is what Jamf uses for the "MAC Address" criteria.

#!/bin/bash

PORT=$(networksetup -listallhardwareports | awk '/Device: en/{print $NF}' | sort | sed -n 2p)

if [ ! -z "$PORT" ]; then
    MACADD=$(ifconfig "$PORT" | awk '/ether/{print $2}' | tr '[a-z]' '[A-Z]')
else
    MACADD=$(ifconfig en0 | awk '/ether/{print $2}' | tr '[a-z]' '[A-Z]')
fi

echo "<result>$MACADD</result>"

Thank you for the insight & responses, updated my original post with what machines we are using and what this works on.

@bpavlov @mm2270