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---
title: VMs can't boot with Network Mode set to Bridged on Apple...
description: VMs running in UTM (and other hypervisors like Parallels and VirtualBox) cannot boot when Network Mode is set to Bridged on Apple M5 machines using the new N1...
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og:description: VMs running in UTM (and other hypervisors like Parallels and VirtualBox) cannot boot when Network Mode is set to Bridged on Apple M5 machines using the new N1...
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# VMs can't boot with Network Mode set to Bridged on Apple M5 Pro machines · Issue #7658 · utmapp

**[Hacker News](https://daily.dev/sources/hn)** · 17 min read · 0 upvotes · 0 comments

## Summary

VMs running in UTM (and other hypervisors like Parallels and VirtualBox) cannot boot when Network Mode is set to Bridged on Apple M5 machines using the new N1 Wi-Fi 7 chip. The root cause is that 'bridged Wi-Fi' has always been a proxy-ARP/MAC-NAT trick implemented inside Apple's vmnet.framework and Virtualization.framework — not true IEEE 802.11 bridging. The N1 chip's new driver code base lacks the internal latitude that older Broadcom-era drivers exposed, breaking the shim. Since all relevant code (Wi-Fi silicon, driver, bridging framework, entitlement) is Apple's, UTM/Parallels/Fusion cannot fix it. The practical workaround is using a USB-to-Ethernet adapter for bridged mode. macOS 26.6 Beta (25G5057c) has been reported to fix the issue, and upgrading to macOS 27 beta is discouraged due to a filesystem corruption bug.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://github.com/utmapp/UTM/issues/7658>

## Community take

How the wider developer community reacted, aggregated from 1 discussion and 69 comments across hackernews (as of 2026-07-29).

**TL;DR:** The community is largely amused and relieved that a macOS/M5 VM bridged-networking bug was fixed in the latest betas, while also enjoying a side debate about software quality, shoe analogies, and the classic GitHub issue dynamic of someone confidently misunderstanding the problem.

**Sentiment:** 35% positive · 40% mixed · 25% skeptical

**The case for**

- The bug was ultimately fixed in macOS 26.6 and 27 betas, vindicating those who reported it.
- A commenter provided a thorough technical explanation of the issue, turning the thread around.

**The pushback**

- The M5 networking stack has caused real problems for corporate deployments waiting on Apple patches.
- A commenter in the GitHub thread confidently dismissed the bug and doubled down despite widespread disagreement, slowing resolution.
- Bridged VM networking on Apple Silicon relies on non-standard proxy ARP workarounds with no clean standard (802.11ak GLK) widely supported.

**By community**

- hackernews (mixed): Commenters are relieved the bug is fixed but critical of Apple's M5 networking quality and entertained by the classic GitHub dynamic of a confident-but-wrong dismisser.

**Hottest debate:** Whether the commenter who argued the bug 'never could have worked' was factually wrong or simply lacked the full picture.

**Open questions**

- Did the macOS 26.6/27 fix revert to the old proxy ARP method or implement a proper solution?
- Will official Wi-Fi standard support (e.g., 802.11ak GLK) ever make VM bridged networking reliable on consumer hardware?

**Highlights**

> Classic GitHub issue thread: Someone shows up and tries to explain it’s not a bug and never could have worked. Everyone else points out that it does work on other Mac hardware. Person doubles down and tries to claim that the bug was that it ever worked, and not working is the correct behavior. New Mac OS beta release fixes the bug and makes it work. Nothing related to the repo was changed.
> — [Aurornis on hackernews · 8 comments](https://news.ycombinator.com/item?id=49085648)

> I loved the last comment where he inferred no one knew the difference between a MAC address and a Mac computer, meanwhile he's fundamentally misunderstanding how networking works and making bizarre statements about wifi that literally everyone disagreed with him on. I bet he's still insisting he was right even though it's all fixed now because he doesn't get how VM network bridging works.
> — [burnte on hackernews](https://news.ycombinator.com/item?id=49089825)

> But, they were wrong ... in assuming what they were saying was at all relevant. And they were so sure they knew what they were talking about and that it applied that they dismissed all the ample evidence to the contrary and also dismissed the, they assumed, delusional people pointing out the contradictions. Their initial misunderstanding was understandable given the overloaded terms but their confidence was poorly calibrated to their weakness detecting the misunderstanding.
> — [skygazer on hackernews](https://news.ycombinator.com/item?id=49092322)

> Buried in-thread, both macOS 26.6 and 27 beta have fixed the issue — has anyone studied whether they implemented this or resumed the old proxy arp method?
> — [altairprime on hackernews](https://news.ycombinator.com/item?id=49091150)

> M5 networking stack is a mess. A lot of corporate deployments had to wait for Apple to patch up things
> — [whatever1 on hackernews](https://news.ycombinator.com/item?id=49092619)

**Source threads**

- [hackernews](https://news.ycombinator.com/item?id=49083634) · 39 points · 69 comments

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---

Tags: [#infrastructure](https://daily.dev/tags/infrastructure), [#mac](https://daily.dev/tags/mac)

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