Werk #20184: proxmox_ve: Fix crash when monitoring an IPv6-only host via IP

Component

Checks & agents

Title

proxmox_ve: Fix crash when monitoring an IPv6-only host via IP

Date

Aug 9, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

3.0.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p12 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Previously, monitoring a Proxmox VE host configured to connect via IP crashed the special agent if the host was IPv6-only (no dual-stack), with

InvalidURL: Failed to parse: [https://<ipv6-address>:8006/api2/json/access/ticket]

The IPv6 address was not enclosed in square brackets as required by RFC 3986, so it couldn't be told apart from the port number. This has been fixed.