Type this command to configure the DHCP class IDs for adapters. For a specific adapter, add the adapter name at the end of the command. Type the ipconfig /showclassid6 command to display all the IPv6 DHCP class IDs. This ipconfig command displays all the DHCP class IDs for all adapters. This command refreshes all DHCP leases and registers the DNS names again. When troubleshooting DNS problems, you can use this ipconfig command to clear problematic DNS cache entries and make sure future requests use the fresh DNS information. This command can flush and reset the DNS Resolver Cache. It will display the DNS record name, type, time to live, data length, section, etc. To check the detailed information of all DNS records, you can type the ipconfig /displaydns command in Command Prompt and press Enter. The DNS Resolver Cache is used to translate domain names to IP addresses. Your computer creates a local cache of all DNS records. Type the real adapter name in the command. For IPv6, you can type ipconfig /renew6 command. To renew the IP address for a specific adapter, you can type ipconfig /renew command. This command will renew the DHCP configuration for all adapters.

ipconfig /renew commandĪfter you type the ipconfig /release command to release the old IP address, you can type the command ipconfig /renew and press Enter to request a new IP address for the client. The ipconfig /release command sends a DHCP release notification to the DHCP server to force release the current DHCP configuration and IP address, and mark the old client’s IP address as available. You can see the name of all adapters by typing ipconfig command. Replace adapter in the command with the exact name of the target adapter. If you want to release the IPv4/IPv6 address for a specific adapter, you can type ipconfig /release or ipconfig /release6 command. To release the IPv6 address of all adapters, type the command ipconfig /release6 and press Enter. This ipconfig command releases the IPv4 address of all network adapters.

Ipconfig command in mac