M5 Networking Issues

Stuart Breckenridge April 15, 2026
Source
I've been having a strange issue with my new M5 MacBook Pro and GitHub: at random intervals, my MacBook cannot connect to GitHub. Well, that's not strictly true: Safari can't connect to GitHub, Git Tower can't push or pull, but Chrome has no issues. Using dns-sd -G v4 github.com to see what's happening over time: Timestamp A/R Flags IF Hostname Address TTL Note 19:46:30.769 Add 2 0 github.com. 20.205.243.166 15 19:55:16.874 Rmv 0 0 github.com. 20.205.243.166 0 19:55:16.885 Add 2 0 github.com. 20.205.243.166 63 20:01:42.237 Add 2 0 github.com. 0.0.0.0 77 No Such Record 20:01:48.800 Rmv 0 0 github.com. 20.205.243.166 0 20:10:18.607 Add 2 0 github.com. 20.205.243.166 60 20:21:43.313 Add 2 0 github.com. 0.0.0.0 77 No Such Record 20:21:49.456 Rmv 0 0 github.com. 20.205.243.166 0 20:21:49.508 Rmv 0 0 github.com. 20.205.243.166 0 20:22:57.954 Add 2 0 github.com. 20.205.243.166 24 20:23:50.255 Rmv 0 0 github.com. 20.205.243.166 0 20:23:50.267 Add 2 0 github.com. 20.205.243.166 60 20:29:05.686 Add 2 0 github.com. 0.0.0.0 77 No Such Record 20:29:13.694 Rmv 0 0 github.com. 20.205.243.166 0 20:29:13.705 Add 2 0 github.com. 20.205.243.166 68 20:37:31.780 Rmv 1 0 github.com. 20.205.243.166 0 20:37:31.780 Add 2 0 github.com. 0.0.0.0 60 No Such Record During those No Such Record periods, GitHub just refused to work in Safari or Git Tower. I switched from Cloudflare's 1.1.1.1 service to Quad9, and ever since I've had no issues. Timestamp A/R Flags IF Hostname Address TTL Note 20:37:45.321 Add 2 0 github.com. 20.205.243.166 65 21:13:26.595 Rmv 0 0 github.com. 20.205.243.166 0 21:13:26.603 Add 2 0 github.com. 20.205.243.166 15 This wasn't a problem on my M3-series MacBook. I can only assume it's a problem with the M5 and its new networking stack.

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