From ubuntu 17.10 he package ifupdown and so /etc/network/interfaces are no longer used. Ubuntu 17.10 Server uses the package netplan instead, which configures systemd-networkd.
Netdiscover is a network address discovering tool that was developed mainly for those wireless networks without DHCP servers, though it also works on wired networks. It sends ARP requests and sniffs for replies.
Problem I have recently upgraded my desktop machind from ubuntu 16.04 to ubuntu 16.10 and after reboot some of the websites are not working.
In Wily Werewolf, starting with systemd/udev will automatically assign predictable, stable network interface names for all local Ethernet, Wlan and Wwan interfaces.
DNStracer determines where a given Domain Name Server (DNS) gets its information from, and follows the chain of DNS servers back to the servers which know the data.