How to setup TSIG (bind9) to work from a dynamic IP?

Hello *,

I had to change my setup and now my "master" DNS is at home and behind a
dynamic IP.  I have setup TSIG, but it requires a fixed IP, which I "not
have".

OK, now I have following Servers

<dns.private.tamay-dogan.net>       master      # @office

<dns1.tamay-dogan.net>              master      # @ ISP 1 gemany
<dns2.tamay-dogan.net>              slave       # @ ISP 2 uk
<dns3.tamay-dogan.net>              slave       # @ ISP 3 germany

My  NS  @office  should  update  <dns1>  which  then  automaticaly  send
notifications to <dns2> and <dns3>.

So, can someone tell men please, how to setup TSIG to let the <dns> work
with <dns1>.

Note:   I do not know what  happen  to  <lists.isc.org>,  because  I  am
        subscribed to <bind-users> since many  years  and  have  already
        written there, but since some weeks I  can  not  more  send  any
        messages to them.  Exactly, I see from the courier log, that  it
        accept my messages, but they  never  appear  on  the  lists  nor
        <listmaster>, <postmaster> or <owner> resond.

        It seems, ANY messages from my domains are eaten by the ISC mail
        system which sounds like a misconfiguration.

        If someone can contact them, please do it on my behalf.

        I am SUBSCRIBED to <bind-users> and GET messages every day.

Thanks, Greetings and nice Day/Evening
    Michelle Konzack

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