Packet loss into KVM virtual machine, drops in "tun_net_xmit"

Solution Verified - Updated -


  • Packet loss into KVM virtual machine, drops in "tun_net_xmit"
  • Traffic inside the VM reports loss of data or in-application sequence numbers, most commonly seen with UDP traffic
  • Running dropwatch on a KVM hypervisor host shows the drops are in the tun_net_xmit function


  • Red Hat Enterprise Linux
  • KVM virtualization
  • dropwatch
  • Unreliable transport protocol such as UDP (User Datagram Protocol)

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