ipconfig commands
ipconfig /all
Displays TCP/IP configuration info for each network adapter
ipconfig /flushdns
clears the name resolver cache, might solve problem when the browser cannot find a host on the internet
ipconfig /displaydns
displays info about name resolutions that windows currently holds in the DNS resolver cache
ipconfig /? or -?
help text
ipconfig /renew
leases a new IP address (often the same one you just released) from a DHCP server
ipconfig /renew6
leases a new IPv6 IP address from a DHCP IPv6 server
ipconfig
view IPv4 and IPv6 address assigned to all network connections
ipconfig /release6
releases an IPv6 address
ipconfig /release
releases the IP address when dynamic IP addressing is being used