[GH-ISSUE #1815] MacOS udp 127.0.0.1:8053 response slow, easy to failed. #779

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opened 2026-03-16 00:12:48 +03:00 by kerem · 1 comment

kerem commented

2026-03-16 00:12:48 +03:00

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Originally created by @mokeyish on GitHub (Oct 31, 2022).
Original GitHub issue: https://github.com/hickory-dns/hickory-dns/issues/1815

Describe the bug
udp 127.0.0.1:8053 response slow, easy to failed (MacOS only).

To Reproduce
Steps to reproduce the behavior:

listen: udp and tcp 0.0.0.0:8053
dig @127.0.0.1 -p 8053 www.google.com (only addr: 127.0.0.1 slow and esay to failed)

while
dig @127.0.0.1 -p 8053 www.google.com +tcp
or
dig @lanip -p 8053 www.google.com
are very quick.

Expected behavior
Quick to response the dns query.

System:

OS: macOS
Architecture: x64
Version: 13
rustc version: rustc 1.66.0-nightly

Version:
Crate: server https://github.com/bluejekyll/trust-dns/blob/main/bin/Cargo.toml
Version: 0.22

Originally created by @mokeyish on GitHub (Oct 31, 2022). Original GitHub issue: https://github.com/hickory-dns/hickory-dns/issues/1815 **Describe the bug** udp 127.0.0.1:8053 response slow, easy to failed (MacOS only). **To Reproduce** Steps to reproduce the behavior: 1. listen: udp and tcp 0.0.0.0:8053 2. `dig @127.0.0.1 -p 8053 www.google.com` (only addr: `127.0.0.1` slow and esay to failed) while `dig @127.0.0.1 -p 8053 www.google.com +tcp` or `dig @lanip -p 8053 www.google.com ` are very quick. **Expected behavior** Quick to response the dns query. **System:** - OS: macOS - Architecture: x64 - Version: 13 - rustc version: rustc 1.66.0-nightly **Version:** Crate: server https://github.com/bluejekyll/trust-dns/blob/main/bin/Cargo.toml Version: 0.22

kerem closed this issue

2026-03-16 00:12:54 +03:00

kerem commented

2026-03-16 00:12:59 +03:00

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Owner

@mokeyish commented on GitHub (Nov 1, 2022):

It slows due to I add a rule.

echo "rdr pass inet proto udp from any to any port 53 -> 127.0.0.1 port 8053" | sudo pfctl -ef -

@mokeyish commented on GitHub (Nov 1, 2022): It slows due to I add a rule. ```shell echo "rdr pass inet proto udp from any to any port 53 -> 127.0.0.1 port 8053" | sudo pfctl -ef - ```

kerem referenced this issue

2026-03-16 02:19:30 +03:00

[PR #779] [MERGED] only enable socket2/reuseport for mDNS #1679