192.168.100.2 is the default IP address if the Proxmox installer cannot detect your network via DHCP. It is typically wrong for your local network and won't work. It's a common mistaken and there are lots of threads about this on this forum. What is the output of cat /etc/network/interfaces
and ip a
? Reserve a static IP address for Proxmox in your router and use that for Proxmox.