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Setting the default interface gives error messages of a bad request error 400.


Article ID: 253155


Updated On:




We are trying to apply a default interface on monitoring point.  We get the error message that says:

Failed to set default interface eth0: 400 Bad Request: The browser (or proxy) sent a request that this server could not understand


Affecting software version EMP 13.10.0 or EMP 13.10.1 or EMP 13.11.0


This is a recently discovered bug, and is expected to be fixed in version EMP 13.12.0.

A workaround is available in the section below.


The workaround will be to use the API to apply the default interface, to do this, log into the monitoring point's webui and go to the API section:

1.  Gear Icon > API

2.  Click on Interface >  Put / Interface/{interface_name}

2.  Click Try It Out

3.  Specify the interface name - in this example, we're using Eth0, then choose Set as Default.  Next, clear the body in the section.

6. Then click the blue Execute button:

The monitoring point will prompt you for the Username and Password in order to apply the settings.