Azure CLI function app access-restriction "has host bits set"

Question

I'm trying to add a rule to enable requests from a devops pipeline to an azure function app.

I run the following az cli command (either from the pipeline or from a VS Code terminal window)

az functionapp config access-restriction add -g rg-name-here -n func-name-here --rule-name devopsRB --action Allow --ip-address "51.142.236.175/27" --priority 146

This gives back the following error:

51.142.236.175/27 has host bits set

If I add the same rule via the Azure portal it works ok.

Anyone see what I'm doing wrong?

Answer 1

The error 51.142.236.175/27 has host bits set also occurred to me. But I ran Azure CLI task with command az functionapp config access-restriction add -g GROUP -n NAME --rule-name RULEname --action Allow --ip-address 51.142.0.0/27 --priority 300 successfully. Consider using 51.142.0.0/27.