CHR + Proxmox — does not determine the state of "link ok" & "no link"

CHR 6.44.5 (long-term)
Proxmox — 6.0-2 (running kernel: 5.0.21-2-pve)

CHR does not determine the state of “link ok” & “no link”. And so if you insert another cable, the DHCP Client does not make a release dhcp lease.

Any idea how to solve this?

Proxmox /etc/network/interfaces

allow-hotplug eno1
auto eno1
iface eno1 inet manual

auto vmbr0
iface vmbr0 inet dhcp
	bridge-ports eno1
	bridge-stp off
	bridge-fd 0
#WAN

allow-hotplug vmbr0 — doesn’t work.