Release v0.4.0 - VM Network Isolation & VLAN Support 🌐

Release Date: 2026-04-04

🎉 What's New in UpservX v0.4.0

This release extends the virtual machine networking stack with two new capabilities: VLAN tagging for bridge-mode interfaces and full lifecycle management of isolated internal libvirt networks — enabling air-gapped VM communication with no IP configuration on the host side.

✨ Highlights

🔖 VLAN Support for VMs

• Bridge-mode VM interfaces now support optional VLAN tagging (802.1Q)
• Specify a VLAN ID (1–4094) when creating, editing or importing a VM
• A tagged sub-interface (e.g. eth0.100) is created automatically on the host if it does not yet exist
• VLAN ID stored in the VM registry and restored on edit

🔒 Internal VM Networks

• New Internal Network mode alongside NAT, Bridge and None
• Create isolated L2 libvirt networks with a name — no subnet, no DHCP, no host routing
• All IP addressing happens inside the VMs themselves; the host gains no route
• Full network lifecycle: create, start, stop and delete via the new Manage Networks dialog in the VM dashboard
• Network state (active / inactive) shown in the networks table with one-click start/stop toggles
• New API endpoints: GET /vm-networks, POST /vm-networks, DELETE /vm-networks/{name}, POST /vm-networks/{name}/start, POST /vm-networks/{name}/stop

🖥️ CLI Version Bump

• upservx CLI updated to v0.4.0
• All existing commands remain unchanged: auth, service, containers, system, apps, backup, logs

📄 Full Release Notes

See releases/0.4.0.md for complete details including all API changes and upgrade notes.