DNS override fails in iOS 27 due to Connectivity Assist
Nobody has claimed this yet.
Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 48/100
- Issue type
- Bug
- Clarity
- Needs clarification
- Activity status
- Active
- Tech stack
- ios
- Domain
- mobile-dev, networking
Research direction
No source files, tests, or entry points are named. Start by reproducing the DNS override failure on iOS 27.0.0 with Tailscale 1.102.4 and review the attached bug report; done means the override remains in use after extended normal use.
Written by the indexing model from the issue text.
Description
What is the issue?
I have an override DNS server set for my tailnet. New on my iPhone updated to iOS 27, it starts off using the override DNS server, but after an hour of normal use, the override server stops working.
Steps to reproduce
- Set an override DNS server on your tailnet.
- Reboot your phone. Watch your server be used for an hour or so.
- Eventually discover that your override DNS server is no longer used.
Are there any recent changes that introduced the issue?
iOS 27 is a notable recent change, though perhaps maybe a Tailscale update broke it.
OS
iOS
OS version
iOS 27.0.0
Tailscale version
1.102.4
Other software
No response
Bug report
BUG-dcc84a5e6f313a3c018dd5ea26dad506e6ac15f0d342305384a5a57ce171e1a1-20260917032959Z-a009ecfe6dadae27
- Dominant language
- Go
- Stars
- 36.7k
- Forks
- 3.2k
- Avg merge
- 1d 20h
- Merged PRs (30d)
- 145
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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