VM hosted on XCP-NG: ICMP traffic via VM firewall works however TCP/UDP traffic fails with/without NAT configured
1) Find the UUID of your VM: xe vm-list name-label="Your_VM_Name" 2) Find the VIF UUIDs associated with that VM: xe vif-list vm-uuid=<VM_UUID> 4) Disable checksumming for each VIF (repeat for every VIF found): xe vif-param-set uuid=<VIF_UUID> other-config:ethtool-tx="off" 5) Restart the VM (a full shutdown and start is recommended) Note: We recommend changing the NIC type to "e1000" xe vm-param-set platform:nic_type="e1000" uuid=<UUID of VM>