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+# Proxmox notes
+
+This document documents Proxmox networking running on a dedicated server with a single IPv4 address.
+
+This process uses [`proxmox-ve_9.0-1.iso`](https://enterprise.proxmox.com/iso/proxmox-ve_9.0-1.iso).
+The process is developed and tested as a VM on another Proxmox host.
+
+## Initial setup
+
+Via `ssh root@`.
+
+### [Configure the no-subscription repository](https://pve.proxmox.com/pve-docs/chapter-sysadmin.html#sysadmin_no_subscription_repo)
+
+```
+# cat >/etc/apt/sources.list.d/proxmox.sources
+Types: deb
+URIs: http://download.proxmox.com/debian/pve
+Suites: trixie
+Components: pve-no-subscription
+Signed-By: /usr/share/keyrings/proxmox-archive-keyring.gpg
+^D
+```
+
+### Update and reboot
+
+```
+# apt update
+# apt full-upgrade
+# shutdown -r now
+```
+
+## Initial network configuration
+
+The installer creates `/etc/network/interfaces`:
+
+```
+auto lo
+iface lo inet loopback
+
+iface ens18 inet manual
+
+auto vmbr0
+iface vmbr0 inet static
+        address 10.43.43.6/25
+        gateway 10.43.43.1
+        bridge-ports ens18
+        bridge-stp off
+        bridge-fd 0
+
+
+source /etc/network/interfaces.d/*
+```
+
+; `10.43.43.6` is the address in the internal network of the parent Proxmox host.
+`10.43.43.1` is the address of the parent Proxmox host that acts as the gateway.
+`ens18` is the virtual network interface of the Proxmox VM.