Debian has introduced a new network interface naming scheme since Release 9 (Stretch). Instead of the usual Ethernet device names (eg eth0) or WLAN device names (eg wlan0), etc. - a newly installed Debian 9 Stretch system - uses names such as enp5s7 and wlp2s0, respectively. Debian 9 (Stretch) still handles these names, but Debian 10 (Buster) no longer. In this description, we will make the transition to using the new network interface names so that if you want to further upgrade your system, your network will work with Debian 10.