windows 

 linux 

 renew ip address 

 ipconfig /renew 


 dhclient -r eth0

 dhclient eth0

 show arp cache

 arp -a 

 arp -n 

 dele arp cache

 arp -d

 arp -d 192.168.10.1

 flush dns cache

 ipconfig /flushdns

 (sudo apt-get install nscd)

 sudo /etc/init.d/nscd restart

 service nscd reload

 disable offload

 

 ethtool --offload eth0 rx off tx off 

 disable ipv6

 

 sysctl -w net.ipv6.conf.all.disable_ipv6=1

 sysctl -w net.ipv6.conf.default.disable_ipv6=1



How to configure default gateway

sudo route add default gw 10.0.0.1 eth0

https://help.ubuntu.com/lts/serverguide/network-configuration.html



How to changing device number(e.g. wlan2 > wlan1) on Ubuntu.

Delete /etc/udev/rules.d/70-persistent-net.rules

Reboot


How to disable ipv6 permanently on Linux.

In "/etc/sysctl.conf", add the following options.

net.ipv6.conf.all.disable_ipv6 = 1

net.ipv6.conf.default.disable_ipv6 = 1

net.ipv6.conf.lo.disable_ipv6 = 1



You would..