v2.0.0-rc9

Features

• Re-add "plain" upstream type (needed for debugging and Gluetun)
• pkg/exchanger: add round trip duration to error message
• pkg/middlewares/filter/mapfilter
  • map filter by IP version to reduce memory usage

Fixes

• Listening on another port than 53 now works
• lowercase all question Name field to avoid any oddities
• internal/dns: loop fixed to handle error before subsequent start completes (fixing whole program being stuck at starting steps)
• do not modify system wide nameservers on Unix systems to avoid permission issues
• internal/support/ipv6:
  • try both cloudflare and google in case one is not available (hum hum cloudflare)
  • detection failure logged as warning not error
• pkg/blockbuilder: skip malformed hostnames instead of returning an error
• pkg/middlewares/localdns:
  • only use DNS servers with a private IP address
  • lowercase all fqdns before checking for locality
• pkg/middlewares/filter/mapfilter
  • blocked ip prefixes metric fixed
• pkg/nameserver: get both private and public DNS servers on Windows

Maintenance

• pkg/dot: revert to use tls.Client and finer steps for more control
• pkg/blockbuilder: optimized code scanning big files line by line
• bump Go from 1.23 to 1.25
• upgrade linter to v2.4.0
• Dependencies
  • bump qdm12/goservices to 6bee97bd4978 in order to have the httpserver handler context cancelation feature
• CI
  • bump actions/setup-go from v2 to v6
  • use Go version from go.mod
  • bump Alpine from 3.20 to 3.22
  • pull container images at build time from ghcr.io when possible
• disable package comments requirement warning in dev container
• upgrade dev container to v0.21
  • Go upgraded from 1.23 to 1.25
  • golangci-lint upgraded to v2.4.0
  • Alpine upgraded from 3.20 to 3.22
  • Disable package comment requirement by gopls' staticcheck
  • Pull container image from ghcr.io