Issue ethtool reports speed of a vnet interface as 10Mbps on KVM guest machine. # ethtool vnet1 Settings for vnet1: Supported ports: [ ] Supported link modes: Supports auto-negotiation: No Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Speed: 10Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: off MDI-X: Unknow