Hi udo,
It's output:
ss -patn | grep 8006
https://s28.postimg.org/9yffuhqp9/image.png
dpkg -l | grep pve
ii corosync-pve 2.4.0-1 amd64 Standards-based cluster framework (daemon and modules)
ii dmeventd 2:1.02.93-pve3 amd64 Linux Kernel Device Mapper event daemon
ii dmsetup 2:1.02.93-pve3 amd64 Linux Kernel Device Mapper userspace library
ii grub-common 2.02-pve4 amd64 GRand Unified Bootloader (common files)
ii grub-efi-amd64-bin 2.02-pve4 amd64 GRand Unified Bootloader, version 2 (EFI-AMD64 binaries)
ii grub-efi-ia32-bin 2.02-pve4 amd64 GRand Unified Bootloader, version 2 (EFI-IA32 binaries)
ii grub-pc 2.02-pve4 amd64 GRand Unified Bootloader, version 2 (PC/BIOS version)
ii grub-pc-bin 2.02-pve4 amd64 GRand Unified Bootloader, version 2 (PC/BIOS binaries)
ii grub2-common 2.02-pve4 amd64 GRand Unified Bootloader (common files for version 2)
ii libcorosync4-pve 2.4.0-1 amd64 Standards-based cluster framework (libraries)
ii libdevmapper-event1.02.1:amd64 2:1.02.93-pve3 amd64 Linux Kernel Device Mapper event support library
ii libdevmapper1.02.1:amd64 2:1.02.93-pve3 amd64 Linux Kernel Device Mapper userspace library
ii liblvm2app2.2:amd64 2.02.116-pve3 amd64 LVM2 application library
ii liblvm2cmd2.02:amd64 2.02.116-pve3 amd64 LVM2 command library
ii libnvpair1 0.6.5.7-pve10~bpo80 amd64 Solaris name-value library for Linux
ii libpve-access-control 4.0-19 amd64 Proxmox VE access control library
ii libpve-common-perl 4.0-73 all Proxmox VE base library
ii libpve-storage-perl 4.0-61 all Proxmox VE storage management library
ii libuutil1 0.6.5.7-pve10~bpo80 amd64 Solaris userland utility library for Linux
ii libzfs2 0.6.5.7-pve10~bpo80 amd64 Native ZFS filesystem library for Linux
ii libzpool2 0.6.5.7-pve10~bpo80 amd64 Native ZFS pool library for Linux
ii lvm2 2.02.116-pve3 amd64 Linux Logical Volume Manager
ii lxc-pve 2.0.4-1 amd64 Linux containers usersapce tools
ii lxcfs 2.0.3-pve1 amd64 LXC userspace filesystem
ii novnc-pve 0.5-8 amd64 HTML5 VNC client
ii pve-cluster 4.0-46 amd64 Cluster Infrastructure for Proxmox Virtual Environment
ii pve-container 1.0-75 all Proxmox VE Container management tool
ii pve-docs 4.3-1 all Proxmox VE Documentation
ii pve-firewall 2.0-29 amd64 Proxmox VE Firewall
ii pve-firmware 1.1-9 all Binary firmware code for the pve-kernel
ii pve-ha-manager 1.0-35 amd64 Proxmox VE HA Manager
ii pve-kernel-4.4.19-1-pve 4.4.19-66 amd64 The Proxmox PVE Kernel Image
ii pve-libspice-server1 0.12.8-1 amd64 SPICE remote display system server library
ii pve-manager 4.3-1 amd64 The Proxmox Virtual Environment
ii pve-qemu-kvm 2.6.1-6 amd64 Full virtualization on x86 hardware
ii spl 0.6.5.7-pve6~bpo80 amd64 Solaris Porting Layer user-space utilities for Linux
ii tar 1.27.1+pve.3 amd64 GNU version of the tar archiving utility
ii zfs-initramfs 0.6.5.7-pve10~bpo80 amd64 Native ZFS root filesystem capabilities for Linux
ii zfsutils 0.6.5.7-pve10~bpo80 amd64 command-line tools to manage ZFS filesystems