Modify one PTR in existing bind9 setup?

Hello *,

I have a hardware DSL/GSM Router where I can not change the setings  for
the 2 NTP servers, because they are hardcoded.

All I can do is to change the two NameServers to my <dns1> and <dns2> or
my internal <dns.private> server where I could setup IPT.

Now seting up PTR zones where those NTPs resides does not work,  because
all other IPs would not more have a working PTR record.

So, my question is:

How can I capture the two hardcoded IPs  from  the  DSL/GSM  Router  and
redirect it to my own NTP-Server?

Note:   This bullshit router of my ISP does SEND more date then only the
        NTP-Request and this is WHY I wan to intercept this crap.

If I should use IPT, how must the rules look like?

The current setup is:

<[email protected]>-+                       +--<dns.private>
<[email protected]>-+                       +--<ntp.private>
                       |                       +--<samba.private>
             INTERNET  +---- router with a ----+
                       |   crappy NTP Client   +--<michelle1.private>
<ntp1_by_IP>-----------+                       +--<devel.private>
<ntp2_by_IP>-----------+
capturing uncontrolled
data from my router

and the traffic goes currently from the router to the TWO  <ntp*_by_IP>.
Now I need to redirect the NTP traffic to <ntp.private> which is a DCF77
receiver.

Thanks, Greetings and nice Day/Evening
    Michelle Konzack

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