chore(deps): bump mdns-sd from 0.20.3 to 0.21.0

[dependabot]

Bumps mdns-sd from 0.20.3 to 0.21.0.

Release notes

Sourced from mdns-sd's releases.

v0.21.0

Breaking changes

• The max outgoing packet size is now 1452 bytes (based on Ethernet MTU), down from 8972 bytes, per RFC 6762 section 17. A record too big for one packet is still sent alone, in a packet of up to the RFC's 9000-byte ceiling, so no record is dropped. Users that need to change the limit can call the new ServiceDaemon::set_max_packet_size().

New features

• Add ServiceDaemon::set_max_packet_size() to change the max byte size of outgoing packets on the interfaces matching a given IfKind. (#487)
• Re-export the receiver-side error types RecvError, RecvTimeoutError and TryRecvError from flume, so that a caller can name them without adding flume as a direct dependency. (#488)

Bug fixes / improvements

• On the receive side, the IPv4 and IPv6 max packet sizes are now tracked separately (8972 and 8952 bytes) so that each stays within the RFC's 9000-byte limit including its own IP header. (#487)

What's Changed

• feat: limit generated packet size per RFC 6762 section 17 by @​keepsimple1 in keepsimple1/mdns-sd#487
• feat: re-export Receiver error types (#488) by @​keepsimple1 in keepsimple1/mdns-sd#489
• refactor: extract the code that does cache flush by @​keepsimple1 in keepsimple1/mdns-sd#490
• chores: prepare for a new release v0.21.0 by @​keepsimple1 in keepsimple1/mdns-sd#491

Full Changelog: keepsimple1/mdns-sd@v0.20.3...v0.21.0

Changelog

Sourced from mdns-sd's changelog.

Version 0.21.0 (2026-08-10)

Breaking changes

• The max outgoing packet size is now 1452 bytes (Ethernet MTU), down from 8972 bytes, per RFC 6762 section 17. A record too big for one packet is still sent alone, in a packet of up to the RFC's 9000-byte ceiling, so no record is dropped. Users that need to change the limit can call the new ServiceDaemon::set_max_packet_size().

New features

• Add ServiceDaemon::set_max_packet_size() to change the max byte size of outgoing packets on the interfaces matching a given IfKind, and export the new default as MAX_PKT_DEFAULT. (#487, commit 82711a8)
• Re-export the receiver-side error types RecvError, RecvTimeoutError and TryRecvError from flume, so that a caller can name them without adding flume as a direct dependency. (#488, commit 20c0eac)

Bug fixes / improvements

• On the receive side, the IPv4 and IPv6 max packet sizes are now tracked separately (8972 and 8952 bytes) so that each stays within the RFC's 9000-byte limit including its own IP header. (#487, commit 82711a8)

All changes

• 6bf2bdb 2026-08-09 refactor: extract the code that does cache flush (#490) (keepsimple1)
• 20c0eac 2026-08-08 feat: re-export Receiver error types (#488) (#489) (keepsimple1)
• 82711a8 2026-08-07 feat: limit generated packet size per RFC 6762 section 17 (#487) (keepsimple1)

Commits

• 5fcb34a chores: prepare for a new release v0.21.0 (#491)
• 6bf2bdb refactor: extract the code that does cache flush (#490)
• 20c0eac feat: re-export Receiver error types (#488) (#489)
• 82711a8 feat: limit generated packet size per RFC 6762 section 17 (#487)
• See full diff in compare view

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