Я не могу использовать интерфейс 10Gb ни с одной из команд ip link/ifconfig/ifup
$ ip -d link show em1
8: em1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
link/ether b8:ca:3a:62:6c:e8 brd ff:ff:ff:ff:ff:ff promiscuity 0 addrgenmode eui64
$ ip link set dev em1 up
$ ifconfig em1 up
$ ifup em1
$ ip -d link show em1
8: em1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
link/ether b8:ca:3a:62:6c:e8 brd ff:ff:ff:ff:ff:ff promiscuity 0 addrgenmode eui64
$ lspci | egrep -i --color 'network|ethernet'
01:00.0 Ethernet controller: Intel Corporation Ethernet Controller 10-Gigabit X540-AT2 (rev 01)
Это openSUSE Leap 42.3 и ядро 4.4.87-25-default