# Beryl AX (MT3000) Tailscale advertise-routes broken when using USB tethering

**URL:** <https://forum.gl-inet.com/t/beryl-ax-mt3000-tailscale-advertise-routes-broken-when-using-usb-tethering/31039>\
**Category:** Router\
**Created:** [July 4, 2023, 1:22am UTC](https://forum.gl-inet.com/t/beryl-ax-mt3000-tailscale-advertise-routes-broken-when-using-usb-tethering/31039 "2023-07-04T01:22:45Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ken830](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/k/958977/32.png) [@ken830](https://forum.gl-inet.com/u/ken830)\
**Post date:** [July 4, 2023, 1:22am UTC](https://forum.gl-inet.com/t/beryl-ax-mt3000-tailscale-advertise-routes-broken-when-using-usb-tethering/31039/1 "2023-07-04T01:22:45Z")

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Latest firmware (4.2.2).

I’ve got Tailscale working and verified while the router is getting WAN from WiFi Repeater. But when I plug in my Google Pixel phone via the USB-A port and the router is getting WAN from “Tethering”, subnet routes break.

I’ve narrowed it down to WAN IP, I think. If I turn on **Allow Remote Access WAN** , it breaks and no routes (not even the LAN subnet) are advertised (according to the Tailscale “Machines” page. If I turn off **Allow Remote Access WAN** , then the LAN route is advertised fine (assuming **Allow Remote Access LAN** is enabled).

I’m guessing somewhere in those if-statement blocks of the gl\_tailscale script, $param isn’t getting set at all. Or $wan\_ip ($wwan\_ip??) is null or something… I’m not well-versed in any of this.

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**Author:** ![dxf](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/d/41988e/32.png) [@dxf](https://forum.gl-inet.com/u/dxf)\
**Post date:** [July 4, 2023, 4:15am UTC](https://forum.gl-inet.com/t/beryl-ax-mt3000-tailscale-advertise-routes-broken-when-using-usb-tethering/31039/2 "2023-07-04T04:15:44Z")

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As you said, only ethernet or repeater ip will be advertise-routes as WAN in gl\_tailscale because of we think there is no actual use scenario for advertise-routes on tethering.

Can you share the actual use of advertise-routes on tethering? Maybe we could consider adding tethering to gl\_tailscale.

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**Author:** ![bring.fringe18](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/bring.fringe18/32/11777_2.png) [@bring.fringe18](https://forum.gl-inet.com/u/bring.fringe18)\
**Post date:** [July 4, 2023, 7:49am UTC](https://forum.gl-inet.com/t/beryl-ax-mt3000-tailscale-advertise-routes-broken-when-using-usb-tethering/31039/3 "2023-07-04T07:49:51Z")

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> [@dxf](#):
>
> […] gl\_tailscale because of we think there is no actual use scenario for advertise-routes on tethering.

That’s rather a hard deal breaker for ‘Road Warriors’, isn’t it?

> **[Road warrior (computing)](https://en.wikipedia.org/wiki/Road_warrior_(computing))**
>
> In business travel, a road warrior is a remote worker that uses mobile devices such as tablet computers, laptops, smartphones, and Internet access while traveling to conduct business. The term has often been used with regard to salespeople who travel often and who seldom are in the office. Today it is used for anyone who works outside the office and travels for business. Unlike digital nomads, road warriors do not necessarily choose to travel; it is part of their work duties.
> The term is believe...

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<div class="post-metadata">

**Author:** ![dxf](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/d/41988e/32.png) [@dxf](https://forum.gl-inet.com/u/dxf)\
**Post date:** [July 4, 2023, 10:28am UTC](https://forum.gl-inet.com/t/beryl-ax-mt3000-tailscale-advertise-routes-broken-when-using-usb-tethering/31039/4 "2023-07-04T10:28:10Z")

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Sorry, I misunderstood ken830’s meaning.

Only not advertise-routes on tethering，the ip of ethernet and repeater should be advertise-routes when **Allow Remote Access WAN** was turned on, the ip of lan as same.

> [@ken830](#):
>
> If I turn on **Allow Remote Access WAN** , it breaks and no routes (not even the LAN subnet) are advertised (according to the Tailscale “Machines” page

it is a bug, and I noticed it was already fixed on snapshot v4.3.2  
[https://dl.gl-inet.com/?model=mt3000&type=snapshot](https://dl.gl-inet.com/?model=mt3000&type=snapshot)

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<div class="post-metadata">

**Author:** ![ken830](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/k/958977/32.png) [@ken830](https://forum.gl-inet.com/u/ken830)\
**Post date:** [July 4, 2023, 11:56am UTC](https://forum.gl-inet.com/t/beryl-ax-mt3000-tailscale-advertise-routes-broken-when-using-usb-tethering/31039/5 "2023-07-04T11:56:58Z")

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Thank you. I’ve been anxiously looking forward to a stable release of firmware for the last few months months. I see there was a stable release almost monthly until I bought the router and then it stopped. Hopefully, a lot bugs will be fixed with the next stable release.

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**Author:** ![bruce](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/bruce/32/35649_2.png) [@bruce](https://forum.gl-inet.com/u/bruce)\
**Post date:** [October 29, 2025, 4:22am UTC](https://forum.gl-inet.com/t/beryl-ax-mt3000-tailscale-advertise-routes-broken-when-using-usb-tethering/31039/6 "2025-10-29T04:22:52Z")

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