Hello again,

Still getting familiar with kamailio, and I'm wondering about the AUTH route in the example configuration file. Here's a reducted-simplified version of it for reference (from git master, without IP AUTH and comments):

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route[AUTH] {
    if (is_method("REGISTER") || from_uri==myself) {
        if (!auth_check("$fd", "subscriber", "1")) {
            auth_challenge("$fd", "0");
            exit;
        }
        if(!is_method("REGISTER|PUBLISH"))
            consume_credentials();
    }
    if (from_uri!=myself && uri!=myself) {
        sl_send_reply("403","Not relaying");
        exit;
    }
    return;
}
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So the way I see it, what happens is the following:

* All REGISTERs will be challenged
* All SIP messages with kamailio's aliases in the "From" header URI will be challenged
* All SIP messages with no reference to kamailio's aliases in both R-URI and "From" header URI will be dropped

The question is, what about messages that do not enter either of the two conditionals? For example, I expect the following to be very common:

* Method: INVITE
* R-URI: myself
* From: username@"UAC's local IP address" (not myself)
* To: myself