René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"-Repeat/-MtuSize/-Traceroute:$false not respected in Test-Connection","articleBody":"### Prerequisites\r\n\r\n- [x] Write a descriptive title.\r\n- [x] Make sure you are able to repro it on the [latest released version](https://github.com/PowerShell/PowerShell/releases)\r\n- [x] Search the existing issues.\r\n- [x] Refer to the [FAQ](https://github.com/PowerShell/PowerShell/blob/master/docs/FAQ.md).\r\n- [x] Refer to [Differences between Windows PowerShell 5.1 and PowerShell](https://learn.microsoft.com/powershell/scripting/whats-new/differences-from-windows-powershell).\r\n\r\n### Steps to reproduce\r\n\r\nThis is a sub-issue of #25242.\r\n\r\nThe cmdlet `Test-Connection` does not respect explicit `$false` values for the `-Repeat`, `-MtuSize`, and `-Traceroute` switch parameters.\r\n\r\n**Test 1: -Traceroute:$false**\r\n```powershell\r\nPS\u003e $result = Test-Connection -TargetName localhost -Traceroute:$false\r\nPS\u003e $result[0].GetType().Name\r\nPS\u003e $result[0] | Select-Object Hop, Hostname, HopAddress\r\n```\r\n\r\n**Test 2: -MtuSize:$false**\r\n```powershell\r\nPS\u003e $result = Test-Connection -TargetName localhost -MtuSize:$false\r\nPS\u003e $result.GetType().Name\r\nPS\u003e $result | Select-Object MtuSize, Destination, BufferSize\r\n```\r\n\r\n**Test 3: -Repeat:$false**\r\n```powershell\r\nPS\u003e # This will run continuously - press Ctrl+C to stop\r\nPS\u003e Test-Connection -TargetName localhost -Repeat:$false\r\n```\r\n\r\n### Expected behavior\r\n\r\n**Test 1: -Traceroute:$false**\r\n```console\r\nPS\u003e $result = Test-Connection -TargetName localhost -Traceroute:$false\r\nPS\u003e $result[0].GetType().Name\r\nPingStatus\r\nPS\u003e $result[0] | Select-Object Ping, Destination, Status\r\nPing Destination Status\r\n---- ----------- ------\r\n   1 localhost   Success\r\n```\r\n\r\n**Test 2: -MtuSize:$false**\r\n```console\r\nPS\u003e $result = Test-Connection -TargetName localhost -MtuSize:$false\r\nPS\u003e $result.GetType().Name\r\nPingStatus\r\nPS\u003e $result | Select-Object Ping, Destination, Status\r\nPing Destination Status\r\n---- ----------- ------\r\n   1 localhost   Success\r\n```\r\n\r\n**Test 3: -Repeat:$false**\r\n```console\r\nPS\u003e Test-Connection -TargetName localhost -Repeat:$false\r\n# Should return 4 ping results (default count) and then stop\r\n```\r\n\r\n`-Traceroute:$false`, `-MtuSize:$false`, and `-Repeat:$false` should each behave the same as omitting the respective switch parameter, returning standard ping results.\r\n\r\n### Actual behavior\r\n\r\n**Test 1: -Traceroute:$false**\r\n```console\r\nPS\u003e $result = Test-Connection -TargetName localhost -Traceroute:$false\r\nPS\u003e $result[0].GetType().Name\r\nTraceStatus\r\nPS\u003e $result[0] | Select-Object Hop, Hostname, HopAddress\r\n\r\nHop Hostname HopAddress\r\n--- -------- ----------\r\n  1 ::1      ::1\r\n```\r\n\r\n**Test 2: -MtuSize:$false**\r\n```console\r\nPS\u003e $result = Test-Connection -TargetName localhost -MtuSize:$false\r\nPS\u003e $result.GetType().Name\r\nPingMtuStatus\r\nPS\u003e $result | Select-Object MtuSize, Destination, BufferSize\r\n\r\nMtuSize Destination BufferSize\r\n------- ----------- ----------\r\n   9999 localhost         9999\r\n```\r\n\r\n**Test 3: -Repeat:$false**\r\n```console\r\nPS\u003e Test-Connection -TargetName localhost -Repeat:$false\r\n# Runs continuously, ignoring the $false value\r\n```\r\n\r\n`-Traceroute:$false` performs a traceroute (returns `TraceStatus`), `-MtuSize:$false` performs MTU discovery (returns `PingMtuStatus`), and `-Repeat:$false` pings continuously, all ignoring the explicit `$false` value.\r\n\r\n### Error details\r\n\r\nNo error is thrown. The cmdlet executes but ignores the explicit `$false` value for each switch parameter.\r\n\r\n### Environment data\r\n\r\n```powershell\r\nPS\u003e $PSVersionTable\r\n\r\nName                           Value\r\n----                           -----\r\nPSVersion                      7.5.4\r\nPSEdition                      Core\r\nGitCommitId                    7.5.4\r\nOS                             Microsoft Windows 10.0.26100\r\nPlatform                       Win32NT\r\nPSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}\r\nPSRemotingProtocolVersion      2.3\r\nSerializationVersion           1.1.0.1\r\nWSManStackVersion              3.0\r\n```\r\n\r\n### Visuals\r\n\r\n_No response_","author":{"url":"https://github.com/yotsuda","@type":"Person","name":"yotsuda"},"datePublished":"2025-11-18T08:10:01.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/26475/PowerShell/issues/26475"}