WARNING: I don't know if this is the correct way to block the r8169 driver   Slackware seems to block drivers via a file created in:   /boot/config/modprobe.d   Depending on what you read, the file should be called either "blacklist" or "blacklist.conf" - I created both just to be sure.   The file contains a single line:   blacklist r8169   It seems to have works and I now see this line in the log:   Oct 27 18:45:03 kernel: r8125 2.