how to remove multiple IP configurations from one network interface

[say2merohit]

how to remove multiple IP configurations from one network interface
trying to do something like this don't know how to remove if my interface has multiple secondary ips assocaited
$nic = Get-AzNetworkInterface -Name testfailover537 -ResourceGroupName myrgname
$nic.IpConfigurations

[CaptainFanZzz]

You can use Remove-AzNetworkInterfaceIpConfig cmdlet to remove the ip configuration you don't need.

[say2merohit]

thank you for responding ...Yes that is what I have done but I have 10 IP addresses not sure how to loop the list
this is how I am doing it right now
$StopWatch = [system.diagnostics.stopwatch]::StartNew()
$Vnet = Get-AzVirtualNetwork -Name myvnet
$Subnet= Get-AzVirtualNetworkSubnetConfig -Name mysnet -VirtualNetwork $Vnet
$MYnic = Get-AzNetworkInterface -Name mynic

Remove-AzNetworkInterfaceIpConfig -Name IP1 -NetworkInterface $Mynic | Set-AzNetworkInterface
Remove-AzNetworkInterfaceIpConfig -Name IP2 -NetworkInterface $Mynic | Set-AzNetworkInterface
Remove-AzNetworkInterfaceIpConfig -Name IP3 -NetworkInterface $Mynic | Set-AzNetworkInterface
Remove-AzNetworkInterfaceIpConfig -Name IP4 -NetworkInterface $Mynic | Set-AzNetworkInterface
Remove-AzNetworkInterfaceIpConfig -Name IP5 -NetworkInterface $Mynic | Set-AzNetworkInterface
Remove-AzNetworkInterfaceIpConfig -Name IP6 -NetworkInterface $Mynic | Set-AzNetworkInterface
$StopWatch.Elapsed

[CaptainFanZzz]

@say2merohit Maybe, this is what you want.

Get-AzNetworkInterfaceIpConfig -NetworkInterface $MYnic | Foreach-Object {
Remove-AzNetworkInterfaceIpConfig -NetworkInterface $MYnic -Name $_.Name | Set-AzNetworkInterface
}

[say2merohit]

thank you so much for resonding , I tried this and wonder why i keep getting this error even when one IP address is primary already

Set-AzNetworkInterface : Network Interface testfailover537 specifies multiple IPConfigurations but none of the IPConfigurations is specified as Primary.
StatusCode: 400
ReasonPhrase: Bad Request
ErrorCode: NetworkInterfaceMustHaveOneIPConfigAsPrimary
ErrorMessage: Network Interface testfailover537 specifies multiple IPConfigurations but none of the IPConfigurations is specified as Primary.
OperationID : 3256b47e-ec50-4a44-83bd-992cfb1273ce

[dingmeng-xue]

@say2merohit , the error returns from service. maybe you need to keep at least one.

[say2merohit]

The first IP is marked primary already still don’t know why I am getting the error trying to debug Get Outlook for iOS<https://aka.ms/o0ukef>

…

________________________________ From: Dingmeng Xue ***@***.***> Sent: Thursday, April 14, 2022 7:43:46 AM To: Azure/azure-powershell ***@***.***> Cc: Rohit Kumar ***@***.***>; Mention ***@***.***> Subject: Re: [Azure/azure-powershell] how to remove multiple IP configurations from one network interface (Discussion #17718) @say2merohit<https://github.com/say2merohit> , the error returns from service. maybe you need to keep at least one. — Reply to this email directly, view it on GitHub<#17718 (reply in thread)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AFFQL2U52FZK73PK5EHCDDTVE55NVANCNFSM5STOUU2Q>. You are receiving this because you were mentioned.Message ID: ***@***.***>

[dingmeng-xue]

You can get the request and response details from debug message. Turn on debug message via $DebugPreference = "Continue".

[say2merohit]

Somehow I feel that is is trying to delete the primary IP address as well , how can we ask script to Skip that ??

Set-AzNetworkInterface : IP Configuration ipconfig1 cannot be deleted. Deletion and renaming of primary IP Configuration is not supported
StatusCode: 400
ReasonPhrase: Bad Request
ErrorCode: IpConfigDeleteNotSupported
ErrorMessage: IP Configuration ipconfig1 cannot be deleted. Deletion and renaming of primary IP Configuration is not supported
OperationID : 62cbc046-6b25-4677-a086-8e1e62da3e5c

[CaptainFanZzz]

If the first ipconfig is primary, you can try this.

Get-AzNetworkInterfaceIpConfig -NetworkInterface $MYnic | Select-Object -Skip 1 | Foreach-Object {
Remove-AzNetworkInterfaceIpConfig -NetworkInterface $MYnic -Name $_.Name | Set-AzNetworkInterface
}

[say2merohit]

Aha you beauty @CaptainFanZzz IT WORKED !! thank you so much !!

Help me understand , I want to learn pwoershell so much so I can apply these logics what do I need to do to become a little pro in powershell if you don't mind me asking Yufan

[CaptainFanZzz]

You're welcome :）

Select-Object help you to skip the first ipconfig that bascially is the primary one and choose the rest, so Foreach will make all the chosen ipconfigs run {code}.

hope it helps.

[CaptainFanZzz]

Here is the script.

Get-AzNetworkInterfaceIpConfig -NetworkInterface $MYnic | Select-Object -Skip 1 | Foreach-Object {
Remove-AzNetworkInterfaceIpConfig -NetworkInterface $MYnic -Name $_.Name | Set-AzNetworkInterface
}