May be you need this. 

https://www.kamailio.org/docs/modules/devel/modules/auth.html#auth.f.consume_credentials

Br, Aqs

On Sat, 18 May 2019, 7:26 pm Juha Heinanen, <jh@tutpro.com> wrote:

Sergiu Pojoga writes:
>
> Noticed BYE requests relayed from caller to callee have the
> *Proxy-Authorization* header including *Digest*, *nonce* and *response*.
>
> Is that by SIP definition or am I doing something wrong? My concern is the
> callee gets to see caller's authentication credentials.

You can remove all unwanted headers from in-dialog requests using
remove_hf function.

-- Juha

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