New version of Tailscale v1.90.1 breaks Comet

javila97 · October 23, 2025, 9:11pm

Hello,

FYI. After running a tailscale update and rebooting the unit, it broke my Comet RM1, and I couldn’t get it to bind to Tailscale from the GUI even after rebooting the unit. I reset the unit, and it reverted to version 1.82.0 under the 1.5.0 release.

Hopefully, the new firmware will fix this issue. I just noticed that a new version of Tailscale was released today, 10/23/2025!

rclilly · October 23, 2025, 10:38pm

I’m experiencing the same issue.

Kyrie · October 24, 2025, 1:41am

The latest version of Tailscale may have some compatibility issues with the RM1 system. We will investigate and resolve this as soon as possible. Please temporarily use the previous version for now.

minmie · October 24, 2025, 2:30am

After digging through the Tailscale source code... I think I've found the cause.

github.com/tailscale/tailscale

util/linuxfw/iptables_disabled.go

672b1f0e7


      
          // Copyright (c) Tailscale Inc & AUTHORS
          // SPDX-License-Identifier: BSD-3-Clause
          
          //go:build (linux && !(arm64 || amd64)) || ts_omit_iptables
          
          package linuxfw
          
          import (
          	"errors"
          
          	"tailscale.com/types/logger"
          )
          
          func detectIptables() (int, error) {

Tailscale introduced a feature to reduce binary size, where on non-amd64/arm64 architectures, the iptables component is no longer compiled by default, causing the program to exit due to the inability to use iptables.

And RM1 soc is ARM32 but other product like RM1PE or RM10 is ARM64

samesame · October 24, 2025, 2:41am

Yep, “cp /rom/usr/sbin/tailscale*” /usr/sbin/ and then “/etc/init.d/S99tailscale start“ rolled it back to 1.82.0, which is better than nothing.

rclilly · October 24, 2025, 8:32pm

Tailscale released 1.90.2 today, which fixes the issue. I’ve upgraded to that version on my Comet and then restarted tailscaled with /etc/init.d/S99tailscale restart. Everything is working fine!

minmie · October 25, 2025, 8:56am

good job , tailscale