We need the persistent network interface names, but after kernel downgrade from 4.4.0-83 to 4.4.0-75 udev rules are not working anymore.
udev rules like below for each interface are already present on the system.
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="02:01:02:03:04:05", ATTR{dev_id}=="0x0", ATTR{type}=="1", NAME="eth0
Also we tried giving the following steps Changing Network Interfaces name Ubuntu 16.04
ifconfig
and the content of/etc/network/interfaces
? – David Foerster Jul 05 '17 at 07:21