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Bethlehem, PA
reply to cchhat01

Re: DHCP address has stayed the same for the past 1+ month

said by cchhat01:

I've got a ddns script running on my router behind the modem which basically updates my IP with the ddns provider noip.com.

The problem is with your script. DynDNS service is similar to NoIP. They state clearly the update client needs to resend the same IP if it hasn't changed in 28 days in order to avoid the record being deleted. I suspect NoIP is the same.

Your script needs to be modified to check if the IP hasn't changed in the past 28 (or similar) days, and send the update record with the same address if this is the case.

Pretty standard stuff...

I think it's been a number of YEARS since my IP has changed...

The Hero of Time
Bath, PA

1 recommendation

mjr is correct, DynDNS deletes your record if nothing is changed. It's to make sure the service is being used.

If you're that worried about your IP, just get a static IP. I know it's an extra $10/month, but you can then guarantee your IP won't ever change and you won't need DynDNS. I'm not sure if this server is for work or for play but there's no reason why if it's for work you don't have the static IP. If it's for play, there's no reason why the extremely rare IP change would matter. The only time my IP changed in the multiple years i've been with RCN was when I moved two cities over.

DNS changes very quick now a days... the up to 24 hours change is something I haven't seen in a long long time when I change DNS.