New-PSSession ip v6 linux2linux Invalid argument

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest released version
• Search the existing issues.
• Refer to the FAQ.
• Refer to Differences between Windows PowerShell 5.1 and PowerShell.

Steps to reproduce

New-PSSession -HostName [fe80::215:5dff:fe15:5934] -UserName root -KeyFilePath '/root/.ssh/id_rsa'

Expected behavior

return a new PSSession

Actual behavior

New-PSSession: [[fe80::215:5dff:fe15:5934]] The background process reported an error with the following message: The SSH client session has ended with error message: ssh: connect to host fe80::215:5dff:fe15:5934 port 22: Invalid argument.

Error details

Exception             : 
    Type        : System.Management.Automation.Remoting.PSRemotingTransportException
    ErrorCode   : 2100
    ErrorRecord : 
        Exception             : 
            Type    : System.Management.Automation.ParentContainsErrorRecordException
            Message : The background process reported an error with the following message: The SSH 
client session has ended with error message: ssh: connect to host fe80::215:5dff:fe15:5934 port 22: Invalid argument.
            HResult : -2146233087
        CategoryInfo          : ResourceUnavailable: (:) [], ParentContainsErrorRecordException
        FullyQualifiedErrorId : System.Management.Automation.Remoting.PSRemotingDataStructureException
    Message     : The background process reported an error with the following message: The SSH clie
nt session has ended with error message: ssh: connect to host fe80::215:5dff:fe15:5934 port 22: Invalid argument.
    HResult     : -2146233087
TargetObject          : System.Management.Automation.RemoteRunspace
CategoryInfo          : OpenError: (System.Management.A…tion.RemoteRunspace:RemoteRunspace) [New-PSSession
], PSRemotingTransportException
FullyQualifiedErrorId : 2100,PSSessionOpenFailed
ErrorDetails          : [[fe80::215:5dff:fe15:5934]] The background process reported an error with the fol
lowing message: The SSH client session has ended with error message: ssh: connect to host fe80::215:5dff:fe15:5934 po
rt 22: Invalid argument.
InvocationInfo        : 
    MyCommand        : New-PSSession
    ScriptLineNumber : 1
    OffsetInLine     : 1
    HistoryId        : 3
    Line             : New-PSSession -HostName "[fe80::215:5dff:fe15:5934]" -UserName root -KeyFilePath '/
root/.ssh/id_rsa'
    PositionMessage  : At line:1 char:1
                       + New-PSSession -HostName "[fe80::215:5dff:fe15:5934]" -UserName root - …
                       + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    InvocationName   : New-PSSession
    CommandOrigin    : Internal
ScriptStackTrace      : at <ScriptBlock>, <No file>: line 1
PipelineIterationInfo :

Environment data

# server:
"Rocky Linux 9.2"
sshd_config:
Subsystem powershell /usr/bin/pwsh -sshs -NoLogo -NoProfile
UseDNS no

# client:
linux + powershell 7.4.3  to server ipv6 addr ,problem
linux + powershell 7.2.21 to server ipv6 addr ,problem


# normal
win + PowerShell 7.5.0-preview.2  ssh to server ipv6 addr  ,normal
linux + powershell 7.2.21 to server ipv4 addr ,normal
linux client tcping server ipv6 22 port,normal

Visuals

No response

Start with the reported New-PSSession command on the Linux client and Rocky Linux 9.2 server, comparing the failing IPv6 connection with the working IPv4 and Windows cases. Trace the SSH remoting path that handles the bracketed link-local address and verify the fix by successfully creating a PSSession over IPv6 without regressing the other cases.