v2.0.0-rc10

Features

• DNS over TLS now uses a pool of connections to re-use TCP connections when possible (#150)
• HEALTH_SERVER_ADDRESS option, defaulting to 127.0.0.1:9999
• by default log i/o timeout errors are logged at debug level because these are fairly common
• REBINDING_PROTECTION_EXEMPT_HOSTNAMES option
• pkg/middlewares/filter: log blocked elements with a reason

Fixes

• internal/local: "site" and "network" TLDs are public, not local
• pkg/middlewares/localdns:
  • do not log request twice on errors
  • do not debug log NXDOMAIN coded responses since these happen often especially with search domains
• internal/support/ipv6: handle Windows error message
• Grafana dashboard plain DNS section updated

Go API breaking changes

• pkg/nameserver: GetDNSServers
  • does not return localhost IPs if no nameserver is found
  • returns an eventual error
  • returns []netip.Addr instead of []netip.AddrPort since it can only be an ip address without port

Maintenance

• Grafana JSON dashboard upgraded to newer schema version 3
• Fix documentation URLs and CI links check
• bump markdownlint from v11 to v21