Repair feature
As an alternative to ipconfig you can use Repair to renew LAN or high-speed Internet connection IP settings. Repair performs a series of commands that repair a connection. The commands that are invoked by Repair are listed below with their command-line equivalents:
Repair Command-line equivalent
Checks whether DHCP is enabled and, if enabled, issues a broadcast renew to refresh the IP address
No command line equivalent available
Flushes the ARP cache
arp -d *
Flush the NetBIOS cache
nbtstat -R
Flushes the DNS cache
ipconfig /flushdns
Re-registers with WINS
nbtstat -RR
Re-registers with DNS
ipconfig /registerdns
Important
Repair uses a broadcast renew and will cause a computer to accept any lease from any DHCP server that is on the network. In contrast, a unicast renew (ipconfig /renew) will only renew the existing lease from the last DHCP server from which the client got a lease.
