is not within the subnet of any address on this interface

I have got a very strange error as below when I tried to configure web authentication on my SRX junos 11.1R4.4

I didn’t actually recall having this error on my 10.4 version but I may be wrong. However address was the only address configured under interface stanza.

Then after a few minutes the penny dropped. Perhaps it isn’t allowed to set one interface for traffic and web authentication purposes and I tried using a separate ip address than the primary one and bingo! it worked.

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