We created /etc/udev/rules.d/70-persistent-net.rules under Ubuntu 14 and later upgraded to Ubuntu 16. We have rebooted numerous times and the name-to-MAC-address mapping continued to be applied. However, one of the units we were using this on failed and we did a chassis replacement (kept the original hard drive). Even after editing the MAC address values in the rules file, the mappings were no longer applied at boot. I learned that the format changed between Ubuntu 14 and 16 and that the old format no longer worked (had to remove the KERNEL== ..." parameter from each line).
What bothers me is why the old file format still works on existing Ubuntu 16 systems and what kinds of other things might break that. Somehow there must be a "database" (I use the term in the loosest sense possible) or scheme which says in effect "if nothing has changed use the previous values". How does this work and does it work differently under netplan? Thanks for your help. Join us at the 2018 Momentum User Conference! Register here Leroy Tennison Network Information/Cyber Security Specialist E: le...@datavoiceint.com 2220 Bush Dr McKinney, Texas 75070 www.datavoiceint.com TThis message has been sent on behalf of a company that is part of the Harris Operating Group of Constellation Software Inc. These companies are listed here . If you prefer not to be contacted by Harris Operating Group please notify us . This message is intended exclusively for the individual or entity to which it is addressed. This communication may contain information that is proprietary, privileged or confidential or otherwise legally exempt from disclosure. If you are not the named addressee, you are not authorized to read, print, retain, copy or disseminate this message or any part of it. If you have received this message in error, please notify the sender immediately by e-mail and delete all copies of the message. -- ubuntu-server mailing list ubuntu-server@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-server More info: https://wiki.ubuntu.com/ServerTeam
