How can I get windows to release an IPv6 address

I have a windows system with an IPv4 address and an IPv6 address and I'm trying to figure out how to release my IPv6 address.

I've tried ipconfig /release6 and I get this error

An error occurred while releasing interface Local Area Connection : The system cannot find the file specified.
An error occurred while releasing interface Loopback Pseudo-Interface 1 : The system cannot find the file specified.
No operation can be performed on isatap.{6B874193-B28A-4446-B6E6-8ADAC22E5090} while it has its media disconnected.
No operation can be performed on IP6Tunnel while it has its media disconnected.

I still have my IPv6 address at the end. I can release IPv4 address using ipconfig /release

• the command prompt is running elevated
• the IPv6 address was assigned by DHCP

4

3 Answers

ipconfig /release6
ipconfig /renew6

1

Powershell with Administrator Rights

Try delete IP6Tunnelnetsh interface ipv6 delete interface IP6Tunnel

or

Show ip addres: netsh interface ipv6 show address
Delete ip/use Interface name: netsh interface ipv6 delete address Ethernet0 200x:x:x:x:x:x:x:x
netsh interface ipv6 delete address (Interface index or name) (ipv6address)

Show routes: netsh interface ipv6 show route
Delete route: netsh interface ipv6 route delete 200x:x:x:x::/64 Ethernet0 store=persistent
netsh interface ipv6 route delete (ipv6prefix::/64) (Interface Index or Name)

A completely powershell way to do this is:

Get-NetAdapter

...locate the ifIndex number of the adapter you wish to modify. Then verify the IPv6 address you wish to release is on that interface index number.

Get-NetIPAddress -ifIndex *number* | where-object {$_.PrefixOrigin -notlike "WellKnown" -and $_.AddressFamily -like "IPv6"}

If you want to get rid of all non-well-known IPv6 addresses (i.e. addresses other than fe80::) ...

Get-NetIPAddress -ifIndex *number* | where-object {$_.PrefixOrigin -notlike "WellKnown" -and $_.AddressFamily -like "IPv6"} | Remove-NetIPAddress

..then answer yes .. or add -Confirm:$False to the end to not prompt for confirmation.

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