Changed `services.zerotierone.localConf` default value to `null` and type to `nullOr attrs` per input.
Changed `systemd` preStart script to delete
`/var/lib/zerotier-one/local.conf` when it is a symlink, and rename when it is an actual file, then only create a symlink to the nix store when `services.zerotierone.localConf` is not null.
This reverts commit 413011ddf4.
Using separate lockfile directories prevents the different kea daemons
from using the interprocess sync lockfile.
Keeping the runtime directory around might be the better approach.
I saw this trace when building my system configuration this morning:
```
lazy-options.json> trace: warning: literalExample is deprecated, use literalExpression instead, or use literalMD for a non-Nix description.
```
This warning was introduced in https://github.com/NixOS/nixpkgs/pull/237557.
The option this commit changes was introduced in https://github.com/NixOS/nixpkgs/pull/137003.
#264753 mistakenly used the dataDir option to set the -data argument.
This broke existing configurations because -data used to be set to
configDir (implicitly, using the -home option, which is equivalent to
setting -config and -data to the same value).
Fix this by introducing a new databaseDir option sets -data and defaults
to configDir. This maintains the existing behavior by default while
still allowing users to specify separate config and database
directories.
ServerQuery actually listens on three separate addresses each
corresponding to its own protocol (raw/telnet, ssh, and http). By only
setting `query_addr` we only update what IP we listen on for the raw
protocol, not ssh and http protocols which end up listening on the
default wildcard address.
This change simply makes it so that setting `queryIP` sets the IP for
all three protocols by setting each corresponding option (`query_ip`,
`query_ssh_ip` and `query_http_ip`).
see https://github.com/lathiat/nss-mdns#:~:text=in%20such%20a%20situation%20causes%20long%20timeouts%20when%20resolving%20hosts
especially:
> libnss_mdns.so.2 resolves both IPv6 and IPv4 addresses, libnss_mdns4.so.2 only IPv4 addresses and
> libnss_mdns6.so.2 only IPv6 addresses. Due to the fact that most mDNS responders only register local IPv4
> addresses via mDNS, most people will want to use libnss_mdns4.so.2 exclusively. Using libnss_mdns.so.2
> or libnss_mdns6.so.2 in such a situation causes long timeouts when resolving hosts since most modern
> Unix/Linux applications check for IPv6 addresses first, followed by a lookup for IPv4.
