Berkay Özdemirci 5a957fd750 Fix EDNS OPT record corruption in DNS cache ...

The TTL computation and assignment loops treat OPT record's Hdr.Ttl
as a regular TTL, but per RFC 6891 it encodes EDNS0 metadata
(ExtRCode|Version|Flags). This corrupts cached responses causing
systemd-resolved to reject them with EDNS version 255.

Also fix pointer aliasing: storeCache() stored raw *dns.Msg pointer
so subsequent mutations by Exchange() corrupted cached data.

- Skip OPT records in all TTL loops (Exchange + loadResponse)
- Use message.Copy() in storeCache() to isolate cache from mutations

2026-04-10 14:08:24 +08:00

..

transport

Fix DNS transport returning error for empty AAAA response

2026-03-23 19:21:55 +08:00

client_log.go

refactor: DNS

2025-07-08 13:12:14 +08:00

client_truncate.go

Fix dns truncate

2025-10-05 17:58:21 +08:00

client.go

Fix EDNS OPT record corruption in DNS cache

2026-04-10 14:08:24 +08:00

extension_edns0_subnet.go

Fix set edns0 client subnet

2025-07-08 13:14:38 +08:00

rcode.go

Fix DNS exchange

2025-09-12 18:05:02 +08:00

router.go

Fix legacy DNS defaults on final transport

2026-03-09 20:06:34 +08:00

transport_adapter.go

refactor: Outbound domain resolver

2025-07-08 13:12:14 +08:00

transport_dialer.go

Fix DNS packet size

2025-09-08 09:12:30 +08:00

transport_manager.go

Improve local DNS server on darwin

2026-01-17 05:44:28 +08:00

transport_registry.go

refactor: DNS

2025-07-08 13:12:14 +08:00