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>

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