Macs face periodic network freeze due to kernel timer wrap
A macOS XNU kernel timer wraps after 49 days, causing TCP connection cleanup to fail and effectively halting networking on affected Macs until they are restarted. Most users won’t hit the 49‑day window, but servers and long‑running Mac workflows can, so a restart restores connectivity and is recommended until Apple releases a fix. Photon documented the bug and says Apple is working on a remediation.