QNAP TS-877 Truenas Journal

Name: Truenas Scale - How to set up a network Bridge
Uploaded: 2024-04-22T19:07:03Z
Description: bridges in truenas scale :thinking: [Truenas Scale - How to set up a network Bridge] the jailmaker instructions for this is a bit, yikes scary :joy:

mooglestiltzkin · April 22, 2024, 7:07pm

bridges in truenas scale

the jailmaker instructions for this is a bit, yikes scary

github.com

Jip-Hop/jailmaker/blob/main/NETWORKING.md

# Jailmaker

## Advanced Networking

These are notes on advanced networking setup you may want to try. Contributions are welcome!

### Bridge Networking

As an alternative to the default host networking mode, you may want to connect to a bridge interface instead and let the jail obtain its IP address via DHCP (although you may have to be patient for up to 20 seconds after the jail started for networking to work, [assigning the IP address is somehow slow](https://github.com/Jip-Hop/jailmaker/issues/7)).

[This YouTube video](https://www.youtube.com/watch?v=7clQw132w58) may be helpful when setting up the bridge interface. Note: You may lock yourself out... It may take several tries... TrueNAS is a bit picky when switching IP addresses and toggling DHCP. May be helpful to connect a monitor and keyboard to the NAS and use `/etc/netcli` to reset the networking interface. Kept bothering with "Register Default Gateway" warning... I just clicked Cancel.

Add the `--network-bridge=br1 --resolv-conf=bind-host` systemd-nspawn flag when asked for `Additional flags` during jail creation, or set it post-creation by [editing](./README.md#edit-jail-config) the `SYSTEMD_NSPAWN_USER_ARGS` variable inside the `config` file.

The TrueNAS host and the jail will be able to communicate with each other as if the jail was just another device on the LAN. It will use the same DNS servers as the TrueNAS host because the `--resolv-conf=bind-host` option bind mounts the `/etc/resolv.conf` file from the host inside the jail. If you want to use the DNS servers advertised via DHCP, then check [DNS via DHCP](#dns-via-dhcp).

To configure a **static IP** with our bridge interface, we need to edit the `80-container-host0.network` file located in `/etc/systemd/network`. Change the `[Network]` section to look like this:

```ini
[Network]

This file has been truncated. show original

Topic		Replies	Views
My first NAS build and Lenovo 430-16i (9400-16i) : does Crossflashing is really supported? TrueNAS General Hardware	101	634	July 27, 2026
True nas build TrueNAS General	33	493	August 2, 2026
Mooglestiltzkin's Build Log: Truenas build recommendation am5 2024? TrueNAS General	402	7886	November 1, 2025
New NAS Builder TrueNAS General Introduction	14	407	January 19, 2026
NAS / Plex Server Build TrueNAS General	16	332	April 30, 2026

QNAP TS-877 Truenas Journal

Related topics