how to keep manuly added DNS in speedtouch DSL modem

i have problem with my ISP, when connecting with my DSL modem i got DNS server wich is dead, so i call the ISP where they said you should enter the DNS IPs in your PC (different than the one i got automatically by the modem). for the pc it was ok but for my setup box (no way to enter a DNS IPs it just getting that from the modem where it is connected to). i search the manual for command lines, then i use the following command :
dns server route add dns=212.118.133.101 metric=1 intf=Internet
dns server route add dns=62.149.114.7 metric=1 intf=Internet.
the result was ok.
DNS Server       Source              Domain            Metric  Intf     State
212.118.133.101                                          1     Internet  UP
62.149.114.7                                             1     Internet  UP
84.235.114.203 *                                         10    Internet  UP
212.118.133.102*                                         10    Internet  UP
the problem now! when i reboot my modem i have to enter the above command or otherwise the modem will assign me the dead DNS servers.
how to keep the above configuration in the modem, so rebooting or power off will not delete the entries??
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fahadmanAsked:
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dragonjimConnect With a Mentor Commented:
I agree that would be ideal, however - I'm curious if it may not require a reprogrammed chip to set an address permamently. Some memory can be flashed, others can't.

After looking over sites the generally concern reprogramming modems; I think this may require an involved hack of the modem. Some problems:
-- 1) you can really wreak havoc on the modem and destroy if you don't know what you are doing
-- 2) Generally, cable / DSL companies (here in the US) do not look favorably upon hacking modems on their service.

Is there any third party you might be able to turn to for assistance with the DSL company? Here in the US we have a "Public Utilities Commission"

But - I would suspect it sounds like the best bet would be to get a router, and program Static DNS into that and use it as your gateway.
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dragonjimCommented:
I'm not finding anything promising.

If I follow you correctly, your ISP is NOT providing DNS services? and in fact supplies a no longer existant name server to the router side of your modem?

And when you override the ISP settings, they disappear on reboot?

If this is the case, from what I'm seeing you may be best:

1) Try to get the ISP to push valid DNS information
2) use the modem in Bridge mode (you would then have a modem vs modem / router, purchase a residential (I presume) router
--> program your DNS into the router.
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fahadmanAuthor Commented:
thanks dragonjim,
1) Try to get the ISP to push valid DNS information

i try 10 times and there is no one even knows what is my problem, their gateway is not configured well to push their new DNS IPs instead its pushing old dead IPs. they simply says take a new IPs and manually enter it in your PCs.  

2) use the modem in Bridge mode
it is complicating the networking in my house, so i would be happy to get the command line that keep the configuration of my modem so it will be stored permanently.  
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fahadmanAuthor Commented:
i wonder why there is a star after the old IPs
84.235.114.203 *
212.118.133.102*  
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fahadmanAuthor Commented:
thanks dragonjim,
  i found the solution for this problem already and my configuration saved even i power off the modem and boot.
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