i have 3 lan ports in my motherboard.how to disable all the onboard LAN port on linux machine? <p>i am building custom operating system with motherboard(MSI Gaming motherboard) and two e1000e driver support NIC cards.i want to use ports which is in nic card instead of onboard.</p> <p>for disabling onboard port,i tried with 70-persistance-rule.but it didn't worked for me.</p> <p>thanks in advance.</p>