1.12.0

IMPORTANT: To ensure preferences are properly saved and avoid #2321, prior to update of Linux tailscale please tailscale down; tailscale up

Bug fixes, improvements

• MagicDNS now uses DNS-over-HTTPS when querying popular upstream resolvers, so DNS queries aren't sent in the clear over the Internet.
• Portmapper now supports UPnP mappings as another way to traverse NAT.
• Support serverless container operation with Azure App Services, AWS App Runner, AWS Lightsail Containers, and other AWS container services built atop AWS Fargate infrastructure.
• Fix saving of preferences when bringing tailscale from down to up. (also in 1.10.2)
• Clamp EDNS size when forwarding DNS queries.
• Fix UDP forwarding for --tun=userspace-networking when functioning as a subnet router #2302.

Platform-specific

Windows

• Support Windows Server Core via CLI mode, use tailscale up --unattended
• Improve DNS support for WSL2.
• Add a UI toggle to allow LAN access while using an exit node.

MacOS

• Fix double escaping of filenames sent via Taildrop.
• Add a "Bug Report" option, accessible while holding Option while clicking on the Tailscale menubar icon and selecting Debug > Bug report...

Linux

• Fix several Resume-from-Suspend issues #1591 #1812 #2458.
• Add MIPS64 binaries.
• Print more useful error message from tailscale up if tailscaled is not running.

Android

• If a device has no Tailscale IPv4 address, like an ephemeral node, display the IPv6 address.

Synology

• Add packages for 88f6281, 88f6282, hi3535.