zeronsd does not handle subnet changes well

zerotier / zeronsd

A DNS server for ZeroTier users

https://zerotier.com

BSD 3-Clause "New" or "Revised" License

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zeronsd does not handle subnet changes well #108

Open erikh opened 3 years ago

erikh commented 3 years ago

Reproduction:

Create a network
configure zeronsd to use that network with two authorized members
change the subnet and trash the old addresses

Congratulations, your server is now unusable until restart.

Will get to this over the next few weeks.

erikh commented 3 years ago

this is likely because the listening IP changed from underneath it. I think the best solution for now is to detect when there are no known addresses that zerotier-one has assigned to that interface. If that occurs, gracefully terminate non-zero to force a restart by the supervisor.

erikh commented 2 years ago

I know I said "the next few weeks" but we all saw how that went. I'm going to leave this alone as a known issue for now, it'll be complicated to resolve trivially with the current state of things.

Basically, if you do this; restart your zeronsd instance.

czy1996 commented 1 year ago

had to delete old addresses manually from the memeber list, then restart the zeronsd instance, and the dns resolution works