TAILMON TAILMON v1.3.0 -Aug 24, 2025- WireGuard-based Tailscale Installer, Configurator and Monitor (Available in AMTM!)

[jksmurf]

I don't use TAILMON but it looks like you would add it to your custom command line (4):

CMD="--advertise-routes=192.168.9.0/24,192.168.53.15/32 --accept-dns=false"

Yep, seems to have done the trick!

No endless loops, I can see the names in /et/resolv.conf

nameserver 1.1.1.1
nameserver 1.0.0.1
nameserver 2606:4700:4700::1111
nameserver 2606:4700:4700::1001

Thanks as always @ColinTaylor

[EDIT2] Acknowledging I am also trying an unstable track version due to this development (but now reveretd to stable), it seems not to be able to reach the DNS servers in any case, but only the local one.

# Health check:
#     - This is an unstable version of Tailscale meant for testing and development purposes. Please report any issues to Tailscale.
#     - Tailscale can't reach the configured DNS servers. Internet connectivity may be affected.

Tailscale Service Options (Custom Mode)
PRECMD: modprobe tun
ARGS: --state=/opt/var/tailscaled.state --statedir=/opt/var/lib/tailscale
PREARGS: nohup

Tailscale Connection Commandline
--advertise-routes=192.168.9.0/24,192.168.53.15/32 --accept-dns=false

  21s / 35% [e=Exit] [Selection?  ]

# Health check:
#     - This is an unstable version of Tailscale meant for testing and development purposes. Please report any issues to Tailscale.

Tailscale Service Options (Custom Mode)                                                                                                     
PRECMD: modprobe tun
ARGS: --state=/opt/var/tailscaled.state --statedir=/opt/var/lib/tailscale
PREARGS: nohup

Tailscale Connection Commandline                                                                                                           
--advertise-routes=192.168.47.0/24 --accept-dns=false

  17s / 28% [e=Exit] [Selection?  ]

[EDIT2] So I can (from my Phone (LTE)) get to the one that does not have the error message. The local one, not. Investigating...

So I thought I "fixed" the local error by selecting Enable under IPv6 "Connect to DNS Server automatically" (which meant giving up my Cloudflare IPv6 DNS) but the error came back; so not a fix.

 

[jksmurf]

Hi Viktor,

Odd thing happening here, I cannot seem to update to the Tailscale Beta (anymore I think, life's a blur atm).
IIRC I updated it yesterday to whatever the latest unstable is, then downgraded it back to 1.88.3 and now I cannot seem to go back up to unstable track again?
I tried starting from within amtm, from the CL (just tailmon), in Monitoring Mode with screen, and without, same result?
It does the whole download install thing but keeps saying 1.88.3 at the end of it, each trial the same.
" Tailscale version" at the CL says 1.88.3.
There is a small discrepancy here "downloaded 30688878, want 30688885" but I am not sure if that is the issue.
I am in CUSTOM Mode btw, if that has aby bearing on it.

How can I get you logs to see what is happening?

Press any key to continue...
  TAILMON Main Setup and Configuration Menu

  Please choose from the various options below, which allow you to perform high level
  actions in the management of the TAILMON script.
 ---------------------------------------------------------------------------------------

  ( 1) : Install Tailscale Entware Package(s)         : Installed
    |--- (R)e-(S)tart / S(T)op Tailscale Service      |--- Started
    |--- (U)p / (D)own Tailscale Connection           |--- Connected
    |--- U(P)date Tailscale Binary to latest version  |--- v1.88.3
    |--- Update Tailscale Binary to latest (B)ETA
    |--- (F)orce Downgrade to Older Tailscale version
    |--- (I)ssue Connection '--reset' Command
  ( 2) : Uninstall Tailscale Entware Package(s)
  ( 3) : Set Tailscale Operating Mode                 : Custom
    |--- Edit Custom (O)peration Mode Settings
  ( 4) : Configure this Router as Exit Node           : No
  ( 5) : Advertise Routes on this router              : Yes (192.168.9.0/24)
  ( 6) : Enable Site-to-Site functionality on router  : No

 ---------------------------------------------------------------------------------------

  ( 7) : Custom configuration options for TAILMON
  ( 8) : Force reinstall Entware dependencies
  ( 9) : Check for latest updates
  (10) : Uninstall TAILMON
    |
  ( L) : Launch TAILMON in Monitoring Mode (sh /jffs/scripts/tailmon.sh)
  ( M) : Launch TAILMON in Monitoring Mode using SCREEN (sh /jf..ts/tailmon.sh -screen)
    |
  ( e) : Exit

 ---------------------------------------------------------------------------------------

Please select? (1-10, R/S/T/U/D/P/B/F/I/O/L/M, e=Exit): m
Messages:

Executing: tailscale update --track unstable

This will update Tailscale from 1.88.3 to 1.89.207. Continue? [y/n] y
Downloading "https://pkgs.tailscale.com/unstable/tailscale_1.89.207_arm64.tgz"
Download size: 30688885
Downloaded 32768/30688885 (0.1%)
GET "https://pkgs.tailscale.com/unstable/tailscale_1.89.207_arm64.tgz": downloaded 30688878, want 30688885

Restart Tailscale?
[y/n]: y

Messages:

Executing: tailscale down

Messages:

 Checking tailscaled...              alive.
 Shutting down tailscaled...              done.

Messages:

 Starting tailscaled...              done.

Messages:

Executing: tailscale up --advertise-routes=192.168.9.0/24,192.168.53.15/32


[Tailscale Service/Connection Successfully Restarted]

Press any key to continue...

 

[Viktor Jaep]

Hi Viktor,

Odd thing happening here, I cannot seem to update to the Tailscale Beta (anymore I think, life's a blur atm).
IIRC I updated it yesterday to whatever the latest unstable is, then downgraded it back to 1.88.3 and now I cannot seem to go back up to unstable track again?
I tried starting from within amtm, from the CL (just tailmon), in Monitoring Mode with screen, and without, same result?
It does the whole download install thing but keeps saying 1.88.3 at the end of it, each trial the same.
" Tailscale version" at the CL says 1.88.3.
There is a small discrepancy here "downloaded 30688878, want 30688885" but I am not sure if that is the issue.
I am in CUSTOM Mode btw, if that has aby bearing on it.

How can I get you logs to see what is happening?

Press any key to continue...
  TAILMON Main Setup and Configuration Menu

  Please choose from the various options below, which allow you to perform high level
  actions in the management of the TAILMON script.
 ---------------------------------------------------------------------------------------

  ( 1) : Install Tailscale Entware Package(s)         : Installed
    |--- (R)e-(S)tart / S(T)op Tailscale Service      |--- Started
    |--- (U)p / (D)own Tailscale Connection           |--- Connected
    |--- U(P)date Tailscale Binary to latest version  |--- v1.88.3
    |--- Update Tailscale Binary to latest (B)ETA
    |--- (F)orce Downgrade to Older Tailscale version
    |--- (I)ssue Connection '--reset' Command
  ( 2) : Uninstall Tailscale Entware Package(s)
  ( 3) : Set Tailscale Operating Mode                 : Custom
    |--- Edit Custom (O)peration Mode Settings
  ( 4) : Configure this Router as Exit Node           : No
  ( 5) : Advertise Routes on this router              : Yes (192.168.9.0/24)
  ( 6) : Enable Site-to-Site functionality on router  : No

 ---------------------------------------------------------------------------------------

  ( 7) : Custom configuration options for TAILMON
  ( 8) : Force reinstall Entware dependencies
  ( 9) : Check for latest updates
  (10) : Uninstall TAILMON
    |
  ( L) : Launch TAILMON in Monitoring Mode (sh /jffs/scripts/tailmon.sh)
  ( M) : Launch TAILMON in Monitoring Mode using SCREEN (sh /jf..ts/tailmon.sh -screen)
    |
  ( e) : Exit

 ---------------------------------------------------------------------------------------

Please select? (1-10, R/S/T/U/D/P/B/F/I/O/L/M, e=Exit): m
Messages:

Executing: tailscale update --track unstable

This will update Tailscale from 1.88.3 to 1.89.207. Continue? [y/n] y
Downloading "https://pkgs.tailscale.com/unstable/tailscale_1.89.207_arm64.tgz"
Download size: 30688885
Downloaded 32768/30688885 (0.1%)
GET "https://pkgs.tailscale.com/unstable/tailscale_1.89.207_arm64.tgz": downloaded 30688878, want 30688885

Restart Tailscale?
[y/n]: y

Messages:

Executing: tailscale down

Messages:

 Checking tailscaled...              alive.
 Shutting down tailscaled...              done.

Messages:

 Starting tailscaled...              done.

Messages:

Executing: tailscale up --advertise-routes=192.168.9.0/24,192.168.53.15/32


[Tailscale Service/Connection Successfully Restarted]

Press any key to continue...

The download functionality is purely Tailscale's. If it's not downloading correctly, they must have an issue with that package. I'd wait a day and try again, and hopefully they will have resolved it?

You can run that command by itself and see if you get the same result?

tailscale update --track unstable