* Feat add basic support for IPv6 networks
Newly generated networks automatically generate an IPv6 prefix of size
64 within the ULA address range, devices obtain a randomly generated
address within this prefix.
Currently, this is Linux only and does not yet support all features
(routes currently cause an error).
* Fix firewall configuration for IPv6 networks
* Fix routing configuration for IPv6 networks
* Feat provide info on IPv6 support for specific client to mgmt server
* Feat allow configuration of IPv6 support through API, improve stability
* Feat add IPv6 support to new firewall implementation
* Fix peer list item response not containing IPv6 address
* Fix nftables breaking on IPv6 address change
* Fix build issues for non-linux systems
* Fix intermittent disconnections when IPv6 is enabled
* Fix test issues and make some minor revisions
* Fix some more testing issues
* Fix more CI issues due to IPv6
* Fix more testing issues
* Add inheritance of IPv6 enablement status from groups
* Fix IPv6 events not having associated messages
* Address first review comments regarding IPv6 support
* Fix IPv6 table being created even when IPv6 is disabled
Also improved stability of IPv6 route and firewall handling on client side
* Fix IPv6 routes not being removed
* Fix DNS IPv6 issues, limit IPv6 nameservers to IPv6 peers
* Improve code for IPv6 DNS server selection, add AAAA custom records
* Ensure IPv6 routes can only exist for IPv6 routing peers
* Fix IPv6 network generation randomness
* Fix a bunch of compilation issues and test failures
* Replace method calls that are unavailable in Go 1.21
* Fix nil dereference in cleanUpDefaultForwardRules6
* Fix nil pointer dereference when persisting IPv6 network in sqlite
* Clean up of client-side code changes for IPv6
* Fix nil dereference in rule mangling and compilation issues
* Add a bunch of client-side test cases for IPv6
* Fix IPv6 tests running on unsupported environments
* Fix import cycle in tests
* Add missing method SupportsIPv6() for windows
* Require IPv6 default route for IPv6 tests
* Fix panics in routemanager tests on non-linux
* Fix some more route manager tests concerning IPv6
* Add some final client-side tests
* Add IPv6 tests for management code, small fixes
* Fix linting issues
* Fix small test suite issues
* Fix linter issues and builds on macOS and Windows again
* fix builds for iOS because of IPv6 breakage
Works only with userspace implementation:
1. Configure host to solve DNS requests via a fake DSN server address in the Netbird network.
2. Add to firewall catch rule for these DNS requests.
3. Resolve these DNS requests and respond by writing directly to wireguard device.
