fixeth0

sudo ifconfig eth0 192.168.100.16
sudo ifconfig eth0 netmask 255.255.255.0
sudo ifconfig eth0 broadcast 192.168.100.1
sudo ifconfig eth0 192.168.100.16 netmask 255.255.255.0 broadcast 192.168.100.1
sudo ifconfig eth0 down
sudo ifconfig eth0 up
sudo ifconfig eth0 mtu 1480
sudo ifconfig eth0 promisc
sudo ifconfig eth0 -promisc

sudo nano /etc/network/interfaces
sudo nano /etc/NetworkManager/NetworkManager.conf
sudo service network-manager restart