Hello @Dustin Kehrli ,
Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.
"*Command group 'network bastion' is in preview and under development. Reference and support levels: https://aka.ms/CLI_refstatus*" is just a warning from Azure CLI and should not affect the successful execution of the actual command.
These warnings are common in Azure CLI and often gets fixed in the future releases.
Reference : https://developercommunity.visualstudio.com/t/issue-upgrading-azure-cli-from-2240-to-2242-on-dev/1440938
https://zcusa.951200.xyz/en-us/answers/questions/256174/index.html
Please let the command run successfully and then confirm the deletion by checking the Azure Bastion in your resource group/subscription.
You can use the "az network bastion list" command to list the bastion hosts in a resource group/subscription.
Refer : https://zcusa.951200.xyz/en-us/cli/azure/network/bastion?view=azure-cli-latest#az_network_bastion_list
I tried the same in lab and can confirm that the Azure Bastion resource was deleted successfully despite the Azure CLI warning. The command kept running for about 5 minutes and did not give any output regarding the deletion but it worked:
NOTE : The command will delete the Bastion host but the associated Public IP will not be deleted along with it. If you do not want to keep the created Public IP, you need to delete that IP separately.
Kindly let us know if the above helps or you need further assistance on this issue.
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