DDNS Name Changes to Old Configuration

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triwaves
Posts: 27
Joined: Mon May 16, 2016 3:11 pm

DDNS Name Changes to Old Configuration

Post by triwaves » Wed Jun 07, 2017 5:01 pm

Hi - I have several servers and bridges I use for development environment and have a strange problem keeping track of them.

I use softether DDNS feature instead of IP address all the time on all machines.

Say I have "vpn123.softerther.net" on machine A

Then I copy configs, make modifications, select a new DDNS name and create machine "B" with DDNS "vpn456.softether.net"

Machines A and B are shut down at some point, and when I reboot "B" the next time it will change the DDNS to "vpn123.softether.net" conflicting with machine "A". Machine "A" then become unreachable by name.

Why is the cloned & modified machine changing DDNS names back to original and how can I make a DDNS name fixed to never change on reboot, restart, etc?

Thanks!

BTW, not sure this is 100% true but seems to happen when the power is cycled (i.e. not graceful shutdown of Machine B)

thisjun
Posts: 2363
Joined: Mon Feb 24, 2014 11:03 am

Re: DDNS Name Changes to Old Configuration

Post by thisjun » Thu Jun 15, 2017 6:19 am

I think the DDNS key are same.
Please try to delete the DDNS key of host B.

triwaves
Posts: 27
Joined: Mon May 16, 2016 3:11 pm

Re: DDNS Name Changes to Old Configuration

Post by triwaves » Sat Jun 17, 2017 5:24 pm

That was the issue, when copying an instance or image need to wipe the key and boot to get a new one. Thanks

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