AFTER REBOOT: $ sudo dmesg | grep ixgbe [ 9.514085] ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver [ 9.514158] ixgbe: Copyright (c) 1999-2016 Intel Corporation. [ 9.831676] ixgbe 0000:04:00.0: Multiqueue Enabled: Rx Queue count = 48, Tx Queue count = 48 XDP Queue count = 0 [ 9.833200] ixgbe 0000:04:00.0: 32.000 Gb/s available PCIe bandwidth (5.0 GT/s PCIe x8 link) [ 9.834717] ixgbe 0000:04:00.0: MAC: 2, PHY: 14, SFP+: 4, PBA No: G42955-014 [ 9.835887] ixgbe 0000:04:00.0: 5c:b9:01:9c:xx:xc [ 9.871413] ixgbe 0000:04:00.0: Intel(R) 10 Gigabit Network Connection [ 10.192002] ixgbe 0000:04:00.1: Multiqueue Enabled: Rx Queue count = 48, Tx Queue count = 48 XDP Queue count = 0 [ 10.193594] ixgbe 0000:04:00.1: 32.000 Gb/s available PCIe bandwidth (5.0 GT/s PCIe x8 link) [ 10.195215] ixgbe 0000:04:00.1: MAC: 2, PHY: 14, SFP+: 3, PBA No: G42955-014 [ 10.196495] ixgbe 0000:04:00.1: 5c:b9:01:9c:xx:xd [ 10.330060] ixgbe 0000:04:00.1: Intel(R) 10 Gigabit Network Connection [ 10.386745] ixgbe 0000:04:00.1 eno50: renamed from eth0 [ 10.450144] ixgbe 0000:04:00.0 eno49: renamed from eth1 [ 15.032230] ixgbe 0000:04:00.1: registered PHC device on eno50 [ 15.202231] ixgbe 0000:04:00.1 eno50: detected SFP+: 3 [ 15.473831] ixgbe 0000:04:00.1 eno50: NIC Link is Up 10 Gbps, Flow Control: RX/TX [ 15.504784] ixgbe 0000:04:00.0: registered PHC device on eno49 [ 15.673735] ixgbe 0000:04:00.0 eno49: detected SFP+: 4 [ 15.945792] ixgbe 0000:04:00.0 eno49: NIC Link is Up 10 Gbps, Flow Control: RX/TX [ 17.278836] ixgbe 0000:04:00.0: removed PHC on eno49 $ ip a s dev eno49 3: eno49: mtu 1500 qdisc mq master bond-kube state DOWN group default qlen 1000 link/ether 5c:b9:01:9c:xx:xc brd ff:ff:ff:ff:ff:ff altname enp4s0f0 $ ip a s dev eno50 7: eno50: mtu 1500 qdisc mq master bond-kube state UP group default qlen 1000 link/ether 5c:b9:01:9c:xx:xc brd ff:ff:ff:ff:ff:ff permaddr 5c:b9:01:9c:xx:xd altname enp4s0f1 $ sudo ethtool bond-kube Settings for bond-kube: Supported ports: [ ] Supported link modes: Not reported Supported pause frame use: No Supports auto-negotiation: No Supported FEC modes: Not reported Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Advertised FEC modes: Not reported Speed: 10000Mb/s Duplex: Full Auto-negotiation: off Port: Other PHYAD: 0 Transceiver: internal Link detected: yes $ sudo ethtool eno50 Settings for eno50: Supported ports: [ FIBRE ] Supported link modes: 10000baseT/Full Supported pause frame use: Symmetric Supports auto-negotiation: No Supported FEC modes: Not reported Advertised link modes: 10000baseT/Full Advertised pause frame use: Symmetric Advertised auto-negotiation: No Advertised FEC modes: Not reported Speed: 10000Mb/s Duplex: Full Auto-negotiation: off Port: Direct Attach Copper PHYAD: 0 Transceiver: internal Supports Wake-on: d Wake-on: d Current message level: 0x00000007 (7) drv probe link Link detected: yes $ sudo ethtool eno49 Settings for eno49: Supported ports: [ FIBRE ] Supported link modes: 10000baseT/Full Supported pause frame use: Symmetric Supports auto-negotiation: No Supported FEC modes: Not reported Advertised link modes: 10000baseT/Full Advertised pause frame use: Symmetric Advertised auto-negotiation: No Advertised FEC modes: Not reported Speed: Unknown! Duplex: Unknown! (255) Auto-negotiation: off Port: Direct Attach Copper PHYAD: 0 Transceiver: internal Supports Wake-on: umbg Wake-on: d Current message level: 0x00000007 (7) drv probe link Link detected: no REMOVING AND RELOADING DRIVER: $ sudo rmmod ixgbe && sudo modprobe ixgbe NEW dmesg LINES AFTER RELOAD: [ 212.592984] ixgbe 0000:04:00.1: removed PHC on eno50 [ 212.727881] ixgbe 0000:04:00.1: complete [ 212.815902] ixgbe 0000:04:00.0: complete [ 212.885654] ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver [ 212.885658] ixgbe: Copyright (c) 1999-2016 Intel Corporation. [ 213.056577] ixgbe 0000:04:00.0: Multiqueue Enabled: Rx Queue count = 48, Tx Queue count = 48 XDP Queue count = 0 [ 213.056932] ixgbe 0000:04:00.0: 32.000 Gb/s available PCIe bandwidth (5.0 GT/s PCIe x8 link) [ 213.057263] ixgbe 0000:04:00.0: MAC: 2, PHY: 14, SFP+: 4, PBA No: G42955-014 [ 213.057267] ixgbe 0000:04:00.0: 5c:b9:01:9c:xx:xc [ 213.062362] ixgbe 0000:04:00.0: Intel(R) 10 Gigabit Network Connection [ 213.063127] ixgbe 0000:04:00.0 eno49: renamed from eth0 [ 213.232606] ixgbe 0000:04:00.1: Multiqueue Enabled: Rx Queue count = 48, Tx Queue count = 48 XDP Queue count = 0 [ 213.232909] ixgbe 0000:04:00.1: 32.000 Gb/s available PCIe bandwidth (5.0 GT/s PCIe x8 link) [ 213.233240] ixgbe 0000:04:00.1: MAC: 2, PHY: 14, SFP+: 3, PBA No: G42955-014 [ 213.233244] ixgbe 0000:04:00.1: 5c:b9:01:9c:xx:xd [ 213.380189] ixgbe 0000:04:00.0: registered PHC device on eno49 [ 213.495085] ixgbe 0000:04:00.1: Intel(R) 10 Gigabit Network Connection [ 213.495461] ixgbe 0000:04:00.1 eno50: renamed from eth0 [ 213.559004] ixgbe 0000:04:00.0 eno49: detected SFP+: 4 [ 213.767832] ixgbe 0000:04:00.1: registered PHC device on eno50 [ 213.803100] ixgbe 0000:04:00.0 eno49: NIC Link is Up 10 Gbps, Flow Control: RX/TX [ 213.939514] ixgbe 0000:04:00.1 eno50: detected SFP+: 3 [ 214.191096] ixgbe 0000:04:00.1 eno50: NIC Link is Up 10 Gbps, Flow Control: RX/TX $ sudo ethtool bond-kube Settings for bond-kube: Supported ports: [ ] Supported link modes: Not reported Supported pause frame use: No Supports auto-negotiation: No Supported FEC modes: Not reported Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Advertised FEC modes: Not reported Speed: 20000Mb/s Duplex: Full Auto-negotiation: off Port: Other PHYAD: 0 Transceiver: internal Link detected: yes $ ip a s dev eno49 12: eno49: mtu 1500 qdisc mq master bond-kube state UP group default qlen 1000 link/ether 5c:b9:01:9c:xx:xc brd ff:ff:ff:ff:ff:ff $ ip a s dev eno50 13: eno50: mtu 1500 qdisc mq master bond-kube state UP group default qlen 1000 link/ether 5c:b9:01:9c:xx:xc brd ff:ff:ff:ff:ff:ff permaddr 5c:b9:01:9c:xx:xd