Hi Liming Wang, Just verified again on the very same system. It looks like it's hardware related, here is how I check it:
1. Power it on with adapter connected, select PXE boot on the Dell splash screen 2. Stop it with Ctrl + c and check the MAC address, then power it off 3. Reboot with adapter disconnected, select PXE boot again 4. Repeat step 2 On step 2, the MAC address didn't change (b6:b7:0d:39:89:b7), however, after disconnecting the adapter, it changed to "00:13:74:00:00:00" again. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1358704 Title: Atheros AR8161[1969:1091] and AR8162 [1969:1090] mac address would change after powered off for a while To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1358704/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
