[GH-ISSUE #557 ] [Bug]: Cannot connect Bambu Studio to Virtual Printer #365

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Originally created by @SyFizz on GitHub (Feb 28, 2026).
Original GitHub issue: https://github.com/maziggy/bambuddy/issues/557

Originally assigned to: @maziggy on GitHub.

Bug Description

Hello,

I spent 3 hours trying to connect Bambu Studio to a Bambuddy Virtual Printer.
In the logs, i have the following error :
2026-02-28 18:34:57,788 INFO [backend.app.services.virtual_printer.bind_server] Bind server: client connected from 192.168.0.54:59064
2026-02-28 18:34:57,788 WARNING [backend.app.services.virtual_printer.bind_server] Bind server: invalid frame from 192.168.0.54:59064
2026-02-28 18:34:59,795 INFO [backend.app.services.virtual_printer.bind_server] Bind server: client connected from 192.168.0.54:59065
2026-02-28 18:34:59,796 WARNING [backend.app.services.virtual_printer.bind_server] Bind server: invalid frame from 192.168.0.54:59065

I added the CA certificate to the Bambu Studio printer.cer file, and followed the documentation.

Expected Behavior

The virtual printer should connect without any issue.

Steps to Reproduce

Install Bambuddy in Docker installation (network host mode)
Create a virtual printer
Try to add the printer in Bambu Studio

Printer Model

P1S

Bambuddy Version

0.2.1.1

Printer Firmware Version

01.09.01.00

Installation Method

Docker

Operating System

Linux (Ubuntu/Debian)

Relevant Logs / Support Package

[bambuddy-support-20260228-184007.zip](https://github.com/user-attachments/files/25629670/bambuddy-support-20260228-184007.zip)

Screenshots

No response

Additional Context

No response

Checklist

I have searched existing issues to ensure this bug hasn't already been reported
I am using the latest version of Bambuddy
My printer is set to LAN Only mode
My printer has Developer Mode enabled

Originally created by @SyFizz on GitHub (Feb 28, 2026). Original GitHub issue: https://github.com/maziggy/bambuddy/issues/557 Originally assigned to: @maziggy on GitHub. ### Bug Description Hello, I spent 3 hours trying to connect Bambu Studio to a Bambuddy Virtual Printer. In the logs, i have the following error : 2026-02-28 18:34:57,788 INFO [backend.app.services.virtual_printer.bind_server] Bind server: client connected from 192.168.0.54:59064 2026-02-28 18:34:57,788 WARNING [backend.app.services.virtual_printer.bind_server] Bind server: invalid frame from 192.168.0.54:59064 2026-02-28 18:34:59,795 INFO [backend.app.services.virtual_printer.bind_server] Bind server: client connected from 192.168.0.54:59065 2026-02-28 18:34:59,796 WARNING [backend.app.services.virtual_printer.bind_server] Bind server: invalid frame from 192.168.0.54:59065 I added the CA certificate to the Bambu Studio printer.cer file, and followed the documentation. ### Expected Behavior The virtual printer should connect without any issue. ### Steps to Reproduce 1. Install Bambuddy in Docker installation (network host mode) 2. Create a virtual printer 3. Try to add the printer in Bambu Studio ### Printer Model P1S ### Bambuddy Version 0.2.1.1 ### Printer Firmware Version 01.09.01.00 ### Installation Method Docker ### Operating System Linux (Ubuntu/Debian) ### Relevant Logs / Support Package ```shell [bambuddy-support-20260228-184007.zip](https://github.com/user-attachments/files/25629670/bambuddy-support-20260228-184007.zip) ``` ### Screenshots _No response_ ### Additional Context _No response_ ### Checklist - [x] I have searched existing issues to ensure this bug hasn't already been reported - [x] I am using the latest version of Bambuddy - [x] My printer is set to LAN Only mode - [x] My printer has Developer Mode enabled

BreizhHardware

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BreizhHardware commented

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@maziggy commented on GitHub (Feb 28, 2026):

Support file is not attached.

@maziggy commented on GitHub (Feb 28, 2026): Support file is not attached.

BreizhHardware commented

bambuddy-support-20260228-184007.zip

Author

Owner

@SyFizz commented on GitHub (Feb 28, 2026):

Hello,

Sorry, here it is :

@SyFizz commented on GitHub (Feb 28, 2026): Hello, Sorry, here it is : [bambuddy-support-20260228-184007.zip](https://github.com/user-attachments/files/25638142/bambuddy-support-20260228-184007.zip)

BreizhHardware commented

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@maziggy commented on GitHub (Feb 28, 2026):

The first log line shows:

2026-02-27 21:03:29,685 ERROR [backend.app.services.virtual_printer.manager] Cannot create directory /app/data/virtual_printer/uploads: Permission denied. For Docker: ensure the data volume is writable by the container user. For bare metal: run 'sudo chown -R $(whoami) /app/data/virtual_printer'

Secondly your Docker network is not running in host mode:

"network_mode_hint": "bridge"

that will cause all the network related errors in logs.

@maziggy commented on GitHub (Feb 28, 2026): The first log line shows: 2026-02-27 21:03:29,685 ERROR [backend.app.services.virtual_printer.manager] Cannot create directory /app/data/virtual_printer/uploads: Permission denied. For Docker: ensure the data volume is writable by the container user. For bare metal: run 'sudo chown -R $(whoami) /app/data/virtual_printer' Secondly your Docker network is not running in host mode: "network_mode_hint": "bridge" that will cause all the network related errors in logs.

BreizhHardware commented

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@SyFizz commented on GitHub (Feb 28, 2026):

I solved that permission problem yesterday already (just chmodded the folder)
For the docker network, i don't understand, i use the provided docker compose with the install script :

root@casaos:/opt/bambuddy# root@casaos:/opt/bambuddy# cat /opt/bambuddy/docker-compose.yml
services:
  bambuddy:
    image: ghcr.io/maziggy/bambuddy:latest
    build: .
    # Usage:
    #   docker compose up -d          → pulls pre-built image from ghcr.io
    #   docker compose up -d --build  → builds locally from source
    container_name: bambuddy
    # Run as current user to avoid permission issues with mounted volumes
    # Override with: PUID=$(id -u) PGID=$(id -g) docker compose up -d
    user: "${PUID:-1000}:${PGID:-1000}"
    #
    # Proxy mode: allow binding to port 990 (FTP) as non-root user.
    # Without this, the FTP proxy silently fails and sending prints won't work.
    cap_add:
      - NET_BIND_SERVICE
    #
    # LINUX: Use host mode for printer discovery and camera streaming
    network_mode: host
    #
    # macOS/WINDOWS: Docker Desktop doesn't support host mode.
    # Comment out "network_mode: host" above and uncomment "ports:" below.
    # Note: Printer discovery won't work - add printers manually by IP.
    #ports:
    #  - "${PORT:-8000}:8000"
    #  - "3000:3000"                  # Virtual printer bind/detect
    #  - "3002:3002"                  # Virtual printer bind/detect
    #  - "8883:8883"                  # Virtual printer MQTT
    #  - "9990:9990"                  # Virtual printer FTP control
    #  - "50000-50100:50000-50100"    # Virtual printer FTP passive data
    volumes:
      - bambuddy_data:/app/data
      - bambuddy_logs:/app/logs
      #
      # Share virtual printer certs with native installation
      # This ensures the slicer only needs to trust one CA certificate.
      - ./virtual_printer:/app/data/virtual_printer
    environment:
      - TZ=${TZ:-Europe/Berlin}
      # Port BamBuddy runs on (default: 8000)
      # Usage: PORT=8080 docker compose up -d
      - PORT=${PORT:-8000}
      # Virtual printer: Set to the Docker host's IP when using bridge mode (ports:).
      # Required for FTP passive mode to work behind NAT.
      # Example: VIRTUAL_PRINTER_PASV_ADDRESS=192.168.1.100
      #- VIRTUAL_PRINTER_PASV_ADDRESS=
    restart: unless-stopped

volumes:
  bambuddy_data:
  bambuddy_logs:
root@casaos:/opt/bambuddy#

@SyFizz commented on GitHub (Feb 28, 2026): I solved that permission problem yesterday already (just chmodded the folder) For the docker network, i don't understand, i use the provided docker compose with the install script : ``` root@casaos:/opt/bambuddy# root@casaos:/opt/bambuddy# cat /opt/bambuddy/docker-compose.yml services: bambuddy: image: ghcr.io/maziggy/bambuddy:latest build: . # Usage: # docker compose up -d → pulls pre-built image from ghcr.io # docker compose up -d --build → builds locally from source container_name: bambuddy # Run as current user to avoid permission issues with mounted volumes # Override with: PUID=$(id -u) PGID=$(id -g) docker compose up -d user: "${PUID:-1000}:${PGID:-1000}" # # Proxy mode: allow binding to port 990 (FTP) as non-root user. # Without this, the FTP proxy silently fails and sending prints won't work. cap_add: - NET_BIND_SERVICE # # LINUX: Use host mode for printer discovery and camera streaming network_mode: host # # macOS/WINDOWS: Docker Desktop doesn't support host mode. # Comment out "network_mode: host" above and uncomment "ports:" below. # Note: Printer discovery won't work - add printers manually by IP. #ports: # - "${PORT:-8000}:8000" # - "3000:3000" # Virtual printer bind/detect # - "3002:3002" # Virtual printer bind/detect # - "8883:8883" # Virtual printer MQTT # - "9990:9990" # Virtual printer FTP control # - "50000-50100:50000-50100" # Virtual printer FTP passive data volumes: - bambuddy_data:/app/data - bambuddy_logs:/app/logs # # Share virtual printer certs with native installation # This ensures the slicer only needs to trust one CA certificate. - ./virtual_printer:/app/data/virtual_printer environment: - TZ=${TZ:-Europe/Berlin} # Port BamBuddy runs on (default: 8000) # Usage: PORT=8080 docker compose up -d - PORT=${PORT:-8000} # Virtual printer: Set to the Docker host's IP when using bridge mode (ports:). # Required for FTP passive mode to work behind NAT. # Example: VIRTUAL_PRINTER_PASV_ADDRESS=192.168.1.100 #- VIRTUAL_PRINTER_PASV_ADDRESS= restart: unless-stopped volumes: bambuddy_data: bambuddy_logs: root@casaos:/opt/bambuddy# ```

BreizhHardware commented

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@maziggy commented on GitHub (Feb 28, 2026):

What OS is Docker running on?

@maziggy commented on GitHub (Feb 28, 2026): What OS is Docker running on?

BreizhHardware commented

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@SyFizz commented on GitHub (Feb 28, 2026):

Debian :

root@casaos:/opt/bambuddy# cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
NAME="Debian GNU/Linux"
VERSION_ID="11"
VERSION="11 (bullseye)"
VERSION_CODENAME=bullseye
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"

@SyFizz commented on GitHub (Feb 28, 2026): Debian : ``` root@casaos:/opt/bambuddy# cat /etc/os-release PRETTY_NAME="Debian GNU/Linux 11 (bullseye)" NAME="Debian GNU/Linux" VERSION_ID="11" VERSION="11 (bullseye)" VERSION_CODENAME=bullseye ID=debian HOME_URL="https://www.debian.org/" SUPPORT_URL="https://www.debian.org/support" BUG_REPORT_URL="https://bugs.debian.org/" ```

BreizhHardware commented

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@maziggy commented on GitHub (Feb 28, 2026):

Mhhhh....curious. So now where the permisson problem is fixed, I need a new support package please.

@maziggy commented on GitHub (Feb 28, 2026): Mhhhh....curious. So now where the permisson problem is fixed, I need a new support package please.

BreizhHardware commented

bambuddy-support-20260228-201426.zip

Author

Owner

@SyFizz commented on GitHub (Feb 28, 2026):

Here's a new one :

@SyFizz commented on GitHub (Feb 28, 2026): Here's a new one : [bambuddy-support-20260228-201426.zip](https://github.com/user-attachments/files/25638749/bambuddy-support-20260228-201426.zip)

BreizhHardware commented

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@maziggy commented on GitHub (Feb 28, 2026):

Developer mode is really enabled on all printers?

@maziggy commented on GitHub (Feb 28, 2026): Developer mode is really enabled on all printers?

BreizhHardware commented

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@SyFizz commented on GitHub (Feb 28, 2026):

Here's some more details i got while trying to troubleshoot (192.168.0.54 is my computer) :

root@casaos:/opt/bambuddy# tcpdump -i eno1 host 192.168.0.54 and port 3002 -X -n -c 5
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on eno1, link-type EN10MB (Ethernet), snapshot length 262144 bytes
20:24:36.475462 IP 192.168.0.54.64468 > 192.168.0.201.3002: Flags [S], seq 1462675690, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
        0x0000:  4500 0034 18a0 4000 8006 5fd4 c0a8 0036  E..4..@..._....6
        0x0010:  c0a8 00c9 fbd4 0bba 572e a8ea 0000 0000  ........W.......
        0x0020:  8002 faf0 ea27 0000 0204 05b4 0103 0308  .....'..........
        0x0030:  0101 0402                                ....
20:24:36.475564 IP 192.168.0.201.3002 > 192.168.0.54.64468: Flags [S.], seq 3005355371, ack 1462675691, win 64240, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
        0x0000:  4500 0034 0000 4000 4006 b874 c0a8 00c9  E..4..@.@..t....
        0x0010:  c0a8 0036 0bba fbd4 b322 156b 572e a8eb  ...6.....".kW...
        0x0020:  8012 faf0 8276 0000 0204 05b4 0101 0402  .....v..........
        0x0030:  0103 0307                                ....
20:24:36.478457 IP 192.168.0.54.64468 > 192.168.0.201.3002: Flags [.], ack 1, win 1026, length 0
        0x0000:  4500 0028 18a1 4000 8006 5fdf c0a8 0036  E..(..@..._....6
        0x0010:  c0a8 00c9 fbd4 0bba 572e a8eb b322 156c  ........W....".l
        0x0020:  5010 0402 594b 0000 0000 0000 0000       P...YK........
20:24:36.479326 IP 192.168.0.54.64468 > 192.168.0.201.3002: Flags [P.], seq 1:294, ack 1, win 1026, length 293
        0x0000:  4500 014d 18a2 4000 8006 5eb9 c0a8 0036  E..M..@...^....6
        0x0010:  c0a8 00c9 fbd4 0bba 572e a8eb b322 156c  ........W....".l
        0x0020:  5018 0402 477e 0000 1603 0101 2001 0001  P...G~..........
        0x0030:  1c03 034b 8675 79a1 88fe f732 e61b b798  ...K.uy....2....
        0x0040:  3119 516f c96d b8ba 6c6f d571 cceb a199  1.Qo.m..lo.q....
        0x0050:  9624 db20 8cd8 adb5 2b53 9cdf 1687 7ddb  .$......+S....}.
        0x0060:  6283 de70 6708 a6c5 2965 e0ad ddfd 8638  b..pg...)e.....8
        0x0070:  4f88 41de 003e 1302 1303 1301 c02c c030  O.A..>.......,.0
        0x0080:  009f cca9 cca8 ccaa c02b c02f 009e c024  .........+./...$
        0x0090:  c028 006b c023 c027 0067 c00a c014 0039  .(.k.#.'.g.....9
        0x00a0:  c009 c013 0033 009d 009c 003d 003c 0035  .....3.....=.<.5
        0x00b0:  002f 00ff 0100 0095 000b 0004 0300 0102  ./..............
        0x00c0:  000a 0016 0014 001d 0017 001e 0019 0018  ................
        0x00d0:  0100 0101 0102 0103 0104 0023 0000 0016  ...........#....
        0x00e0:  0000 0017 0000 000d 002a 0028 0403 0503  .........*.(....
        0x00f0:  0603 0807 0808 0809 080a 080b 0804 0805  ................
        0x0100:  0806 0401 0501 0601 0303 0301 0302 0402  ................
        0x0110:  0502 0602 002b 0005 0403 0403 0300 2d00  .....+........-.
        0x0120:  0201 0100 3300 2600 2400 1d00 2021 24b7  ....3.&.$....!$.
        0x0130:  d923 31de bd6b d95b 30ff c7bc 3591 daec  .#1..k.[0...5...
        0x0140:  7f8c 9aa8 8d42 cd8a f7b9 21c0 14         .....B....!..
20:24:36.479362 IP 192.168.0.201.3002 > 192.168.0.54.64468: Flags [.], ack 294, win 501, length 0
        0x0000:  4500 0028 09ab 4000 4006 aed5 c0a8 00c9  E..(..@.@.......
        0x0010:  c0a8 0036 0bba fbd4 b322 156c 572e aa10  ...6.....".lW...
        0x0020:  5010 01f5 826a 0000                      P....j..
5 packets captured
11 packets received by filter
0 packets dropped by kernel

@SyFizz commented on GitHub (Feb 28, 2026): Here's some more details i got while trying to troubleshoot (192.168.0.54 is my computer) : ``` root@casaos:/opt/bambuddy# tcpdump -i eno1 host 192.168.0.54 and port 3002 -X -n -c 5 tcpdump: verbose output suppressed, use -v[v]... for full protocol decode listening on eno1, link-type EN10MB (Ethernet), snapshot length 262144 bytes 20:24:36.475462 IP 192.168.0.54.64468 > 192.168.0.201.3002: Flags [S], seq 1462675690, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0 0x0000: 4500 0034 18a0 4000 8006 5fd4 c0a8 0036 E..4..@..._....6 0x0010: c0a8 00c9 fbd4 0bba 572e a8ea 0000 0000 ........W....... 0x0020: 8002 faf0 ea27 0000 0204 05b4 0103 0308 .....'.......... 0x0030: 0101 0402 .... 20:24:36.475564 IP 192.168.0.201.3002 > 192.168.0.54.64468: Flags [S.], seq 3005355371, ack 1462675691, win 64240, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 0x0000: 4500 0034 0000 4000 4006 b874 c0a8 00c9 E..4..@.@..t.... 0x0010: c0a8 0036 0bba fbd4 b322 156b 572e a8eb ...6.....".kW... 0x0020: 8012 faf0 8276 0000 0204 05b4 0101 0402 .....v.......... 0x0030: 0103 0307 .... 20:24:36.478457 IP 192.168.0.54.64468 > 192.168.0.201.3002: Flags [.], ack 1, win 1026, length 0 0x0000: 4500 0028 18a1 4000 8006 5fdf c0a8 0036 E..(..@..._....6 0x0010: c0a8 00c9 fbd4 0bba 572e a8eb b322 156c ........W....".l 0x0020: 5010 0402 594b 0000 0000 0000 0000 P...YK........ 20:24:36.479326 IP 192.168.0.54.64468 > 192.168.0.201.3002: Flags [P.], seq 1:294, ack 1, win 1026, length 293 0x0000: 4500 014d 18a2 4000 8006 5eb9 c0a8 0036 E..M..@...^....6 0x0010: c0a8 00c9 fbd4 0bba 572e a8eb b322 156c ........W....".l 0x0020: 5018 0402 477e 0000 1603 0101 2001 0001 P...G~.......... 0x0030: 1c03 034b 8675 79a1 88fe f732 e61b b798 ...K.uy....2.... 0x0040: 3119 516f c96d b8ba 6c6f d571 cceb a199 1.Qo.m..lo.q.... 0x0050: 9624 db20 8cd8 adb5 2b53 9cdf 1687 7ddb .$......+S....}. 0x0060: 6283 de70 6708 a6c5 2965 e0ad ddfd 8638 b..pg...)e.....8 0x0070: 4f88 41de 003e 1302 1303 1301 c02c c030 O.A..>.......,.0 0x0080: 009f cca9 cca8 ccaa c02b c02f 009e c024 .........+./...$ 0x0090: c028 006b c023 c027 0067 c00a c014 0039 .(.k.#.'.g.....9 0x00a0: c009 c013 0033 009d 009c 003d 003c 0035 .....3.....=.<.5 0x00b0: 002f 00ff 0100 0095 000b 0004 0300 0102 ./.............. 0x00c0: 000a 0016 0014 001d 0017 001e 0019 0018 ................ 0x00d0: 0100 0101 0102 0103 0104 0023 0000 0016 ...........#.... 0x00e0: 0000 0017 0000 000d 002a 0028 0403 0503 .........*.(.... 0x00f0: 0603 0807 0808 0809 080a 080b 0804 0805 ................ 0x0100: 0806 0401 0501 0601 0303 0301 0302 0402 ................ 0x0110: 0502 0602 002b 0005 0403 0403 0300 2d00 .....+........-. 0x0120: 0201 0100 3300 2600 2400 1d00 2021 24b7 ....3.&.$....!$. 0x0130: d923 31de bd6b d95b 30ff c7bc 3591 daec .#1..k.[0...5... 0x0140: 7f8c 9aa8 8d42 cd8a f7b9 21c0 14 .....B....!.. 20:24:36.479362 IP 192.168.0.201.3002 > 192.168.0.54.64468: Flags [.], ack 294, win 501, length 0 0x0000: 4500 0028 09ab 4000 4006 aed5 c0a8 00c9 E..(..@.@....... 0x0010: c0a8 0036 0bba fbd4 b322 156c 572e aa10 ...6.....".lW... 0x0020: 5010 01f5 826a 0000 P....j.. 5 packets captured 11 packets received by filter 0 packets dropped by kernel ```

BreizhHardware commented

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@maziggy commented on GitHub (Feb 28, 2026):

Too quick! We first need to get Bambuddy running properly!

@maziggy commented on GitHub (Feb 28, 2026): Too quick! We first need to get Bambuddy running properly!

BreizhHardware commented

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Owner

@maziggy commented on GitHub (Feb 28, 2026):

So Developer mode is really enabled on all printers?

@maziggy commented on GitHub (Feb 28, 2026): So Developer mode is really enabled on all printers?

BreizhHardware commented

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@SyFizz commented on GitHub (Feb 28, 2026):

Developer mode is really enabled on all printers?

I just checked, Yes it is :)

@SyFizz commented on GitHub (Feb 28, 2026): > Developer mode is really enabled on all printers? I just checked, Yes it is :)

BreizhHardware commented

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@SyFizz commented on GitHub (Feb 28, 2026):

Too quick! We first need to get Bambuddy running properly!

Bambuddy looks like it's running properly, I can manage my printers from there
The issue is specifically the virtual printer feature

@SyFizz commented on GitHub (Feb 28, 2026): > Too quick! We first need to get Bambuddy running properly! Bambuddy looks like it's running properly, I can manage my printers from there The issue is specifically the virtual printer feature

BreizhHardware commented

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@maziggy commented on GitHub (Feb 28, 2026):

OK....so for the virtual printer SSDP is mandatory and SSDP requires network mode host. Without mode host, it cannot work.

There must be something on your system. I know for 100% sure, that it shows

"network_mode_hint": "host"

when Docker network is in host mode. But yours shows

"network_mode_hint": "bridge"

I'm very sure that this is the problem.

Are you running Portainer or something like that? I'm also wondering what Docker version you are running (since your OS is quite old - Debian 11)?

@maziggy commented on GitHub (Feb 28, 2026): OK....so for the virtual printer SSDP is mandatory and SSDP requires network mode host. Without mode host, it cannot work. There must be something on your system. I know for 100% sure, that it shows "network_mode_hint": "host" when Docker network is in host mode. But yours shows "network_mode_hint": "bridge" I'm very sure that this is the problem. Are you running Portainer or something like that? I'm also wondering what Docker version you are running (since your OS is quite old - Debian 11)?

BreizhHardware commented

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@SyFizz commented on GitHub (Feb 28, 2026):

Here's the output of docker version :

Client: Docker Engine - Community
 Version:           27.3.1
 API version:       1.47
 Go version:        go1.22.7
 Git commit:        ce12230
 Built:             Fri Sep 20 11:41:19 2024
 OS/Arch:           linux/amd64
 Context:           default

Server: Docker Engine - Community
 Engine:
  Version:          27.3.1
  API version:      1.47 (minimum version 1.24)
  Go version:       go1.22.7
  Git commit:       41ca978
  Built:            Fri Sep 20 11:41:19 2024
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.7.24
  GitCommit:        88bf19b2105c8b17560993bee28a01ddc2f97182
 runc:
  Version:          1.2.2
  GitCommit:        v1.2.2-0-g7cb3632
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

Also, i'm running CasaOS on this server.
I think the container is actually in host mode :

@SyFizz commented on GitHub (Feb 28, 2026): Here's the output of `docker version` : ``` Client: Docker Engine - Community Version: 27.3.1 API version: 1.47 Go version: go1.22.7 Git commit: ce12230 Built: Fri Sep 20 11:41:19 2024 OS/Arch: linux/amd64 Context: default Server: Docker Engine - Community Engine: Version: 27.3.1 API version: 1.47 (minimum version 1.24) Go version: go1.22.7 Git commit: 41ca978 Built: Fri Sep 20 11:41:19 2024 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.7.24 GitCommit: 88bf19b2105c8b17560993bee28a01ddc2f97182 runc: Version: 1.2.2 GitCommit: v1.2.2-0-g7cb3632 docker-init: Version: 0.19.0 GitCommit: de40ad0 ``` Also, i'm running CasaOS on this server. I think the container is actually in host mode : <img width="716" height="47" alt="Image" src="https://github.com/user-attachments/assets/69eb8c5e-f3cb-450a-88cc-956cdfcf21cb" />

BreizhHardware commented

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@maziggy commented on GitHub (Feb 28, 2026):

Very strange. What else? Oh yes, iptables rules are set?

@maziggy commented on GitHub (Feb 28, 2026): Very strange. What else? Oh yes, iptables rules are set?

BreizhHardware commented

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@SyFizz commented on GitHub (Feb 28, 2026):

Yep :

@SyFizz commented on GitHub (Feb 28, 2026): Yep : <img width="756" height="91" alt="Image" src="https://github.com/user-attachments/assets/e756853c-b3c7-4069-8e1d-725a423d8e12" />

BreizhHardware commented

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@maziggy commented on GitHub (Feb 28, 2026):

Damn.

Tell me something about your network topology/setup.

@maziggy commented on GitHub (Feb 28, 2026): Damn. Tell me something about your network topology/setup.

BreizhHardware commented

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@maziggy commented on GitHub (Feb 28, 2026):

And show me a screenshot of your virtual printer settings please.

@maziggy commented on GitHub (Feb 28, 2026): And show me a screenshot of your virtual printer settings please.

BreizhHardware commented

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@SyFizz commented on GitHub (Feb 28, 2026):

Just a classic ISP router with a 192.168.0.0/24 range
The server is a Lenovo tiny pc, baremetal debian 11 with CasaOS installed (should not interfere with bambuddy), and have a DHCP ipv4 and 2 aliases :

# The primary network interface
allow-hotplug eno1
iface eno1 inet dhcp

auto eno1:1
iface eno1:1 inet static
    address 192.168.0.201
    netmask 255.255.255.0

auto eno1:2
iface eno1:2 inet static
    address 192.168.0.202
    netmask 255.255.255.0

My laptop is on the same subnet, over WiFi.

Here's the screenshot you requested :

@SyFizz commented on GitHub (Feb 28, 2026): Just a classic ISP router with a 192.168.0.0/24 range The server is a Lenovo tiny pc, baremetal debian 11 with CasaOS installed (should not interfere with bambuddy), and have a DHCP ipv4 and 2 aliases : ``` # The primary network interface allow-hotplug eno1 iface eno1 inet dhcp auto eno1:1 iface eno1:1 inet static address 192.168.0.201 netmask 255.255.255.0 auto eno1:2 iface eno1:2 inet static address 192.168.0.202 netmask 255.255.255.0 ``` My laptop is on the same subnet, over WiFi. Here's the screenshot you requested : <img width="1030" height="731" alt="Image" src="https://github.com/user-attachments/assets/050a1036-266a-4284-b37f-f9152105c897" />

BreizhHardware commented

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@maziggy commented on GitHub (Feb 28, 2026):

Are you kidding me? You didn't select a target printer!

@maziggy commented on GitHub (Feb 28, 2026): Are you kidding me? You didn't select a target printer!

BreizhHardware commented

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@SyFizz commented on GitHub (Feb 28, 2026):

I didn’t thought it was mandatory, since I want to queue prints to dispatch them on different printers at once after sending…
Sorry for the bothering if that’s the issue

I’ll try setting one when I get back at home

@SyFizz commented on GitHub (Feb 28, 2026): I didn’t thought it was mandatory, since I want to queue prints to dispatch them on different printers at once after sending… Sorry for the bothering if that’s the issue I’ll try setting one when I get back at home

BreizhHardware commented