Bug: IPv4 and IPv6 addresses of the same host mismatched after daemon restart

[stelas]

TLDR: After a daemon restart, the persisted IP4 and IP6 addresses are not properly mapped to the corresponding host entries.

1. Is this urgent: No
2. DNS provider(s) you use: Hurricane Electric
3. Program version: Running version latest built on 2022-03-15T14:38:50Z (commit 584597d)
4. What are you using to run the container: Running /updater/app of latest container under local user

First start without updates.json:

2022/07/18 12:20:10 INFO reading JSON config from file /home/ddns-updater/data/config.json
2022/07/18 12:20:10 DEBUG config read: {
  "settings": [
    {
      "provider": "he",
      "domain": "dyn.xxx.de",
      "host": "freya",
      "password": "xxx",
      "ip_version": "ipv4"
    },
    {
      "provider": "he",
      "domain": "dyn.xxx.de",
      "host": "freya",
      "password": "xxx",
      "ip_version": "ipv6"
    }
  ]
}
2022/07/18 12:20:10 INFO Found 2 settings to update records
2022/07/18 12:20:10 INFO Reading history from database: domain dyn.xxx.de host freya
2022/07/18 12:20:10 INFO Reading history from database: domain dyn.xxx.de host freya
2022/07/18 12:20:10 INFO healthcheck server: listening on 127.0.0.1:9999
2022/07/18 12:20:10 DEBUG configured to fetch IP: v4 or v6: false, v4: true, v6: true
2022/07/18 12:20:10 INFO backup: disabled
2022/07/18 12:20:10 INFO http server: listening on :8000
2022/07/18 12:20:11 DEBUG your public IP address are: v4 or v6: <nil>, v4: 85.212.x.x, v6: 2001:x:x:1::5
2022/07/18 12:20:11 DEBUG IPv4 address of freya.dyn.xxx.de is 85.212.x.x and your IPv4 address is 85.212.x.x, skipping update
2022/07/18 12:20:11 DEBUG IPv6 address of freya.dyn.xxx.de is 2001:x:x:1::5 and your IPv6 address is 2001:x:x:1::5, skipping update

Data file updates.json:

{
  "records": [
    {
      "domain": "dyn.xxx.de",
      "host": "freya",
      "ips": [
        {
          "ip": "85.212.x.x",
          "time": "2022-07-17T20:10:44.754153567+02:00"
        },
        {
          "ip": "2001:x:x:1::5",
          "time": "2022-07-17T20:10:44.754153567+02:00"
        }
      ]
    }
  ]
}

Restart with updates.json: The IPv6 address is suddenly also in the IPv4 entry.

2022/07/18 12:20:59 INFO reading JSON config from file /home/ddns-updater/data/config.json
2022/07/18 12:20:59 DEBUG config read: {
  "settings": [
    {
      "provider": "he",
      "domain": "dyn.xxx.de",
      "host": "freya",
      "password": "xxx",
      "ip_version": "ipv4"
    },
    {
      "provider": "he",
      "domain": "dyn.xxx.de",
      "host": "freya",
      "password": "xxx",
      "ip_version": "ipv6"
    }
  ]
}
2022/07/18 12:20:59 INFO Found 2 settings to update records
2022/07/18 12:20:59 INFO Reading history from database: domain dyn.xxx.de host freya
2022/07/18 12:20:59 INFO Reading history from database: domain dyn.xxx.de host freya
2022/07/18 12:20:59 DEBUG configured to fetch IP: v4 or v6: false, v4: true, v6: true
2022/07/18 12:20:59 INFO healthcheck server: listening on 127.0.0.1:9999
2022/07/18 12:20:59 INFO backup: disabled
2022/07/18 12:20:59 INFO http server: listening on :8000
2022/07/18 12:21:00 DEBUG your public IP address are: v4 or v6: <nil>, v4: 85.212.x.x, v6: 2001:x:x:1::5
2022/07/18 12:21:00 DEBUG record freya.dyn.xxx.de is within ban period or cooldown period, skipping update
2022/07/18 12:21:00 DEBUG record freya.dyn.xxx.de is within ban period or cooldown period, skipping update

Host OS: Linux freya 5.18.12-arch1-1 #1 SMP PREEMPT_DYNAMIC Fri, 15 Jul 2022 15:33:02 +0000 x86_64 GNU/Linux