Comment 0 for bug 1676329

Detailed bug description:
 After rebooting compute node one of dpdk interface belonging to balance-tcp bonding mode is lost.

 ovs-vsctl show:

    Bridge br-prv
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port "bond0"
            Interface "dpdk1"
                type: dpdk
                error: "could not open network device dpdk1 (No such device)"
            Interface "dpdk0"
                type: dpdk
        Port br-prv
            Interface br-prv
                type: internal
        Port phy-br-prv
            Interface phy-br-prv
                type: patch
                options: {peer=int-br-prv}
    ovs_version: "2.6.1"

Steps to reproduce:
 1. Deploy cluster with dpdk and bond mode balance-tcp. (In my case I used 2 compute nodes)
 2. Configure LACP in ovs and on the hardware switch

        ovs-vsctl set port bond0 lacp=active
        ovs-vsctl set port bond0 other_config:lacp-time=slow

 3. Check that LACP in negotiated

        root@node-3:~# ovs-appctl bond/show bond0
        ---- bond0 ----
        bond_mode: balance-tcp
        bond may use recirculation: yes, Recirc-ID : 1
        bond-hash-basis: 0
        updelay: 3000 ms
        downdelay: 1000 ms
        next rebalance: 7774 ms
        lacp_status: `negotiated`
        active slave mac: 00:25:90:0a:4b:dc(dpdk0)

 2. Reboot any compute node

 3. Look at port status in ovs
        ovs-vsctl show

Expected results:
 LACP works correctly.

Actual result:
 Could not open network device dpdk0 or 1. Only one interface is available

Reproducibility:
 Checked on builds 1499, 1507,1513. Each time after rebooting compute node.

Description of the environment:
 Fuel 10 build 1513
 1 controller, 2 computes, 1 BASE-OS node. Bonding 2x10G on both compute nodes with DPDK and balance-tcp mode.

Additional information:

 root@node-1:~# dpdk-devbind -s

Network devices using DPDK-compatible driver
============================================
0000:03:00.0 '82599ES 10-Gigabit SFI/SFP+ Network Connection' drv=igb_uio unused=ixgbe
0000:03:00.1 '82599ES 10-Gigabit SFI/SFP+ Network Connection' drv=igb_uio unused=ixgbe

Network devices using kernel driver
===================================
0000:0a:00.0 'I350 Gigabit Network Connection' if=enp10s0f0 drv=igb unused=igb_uio
0000:0a:00.1 'I350 Gigabit Network Connection' if=enp10s0f1 drv=igb unused=igb_uio
0000:81:00.0 'Ethernet Controller XL710 for 40GbE QSFP+' if=ens11f0,ens11f0d1 drv=i40e unused=igb_uio
0000:81:00.1 'Ethernet Controller XL710 for 40GbE QSFP+' if=ens11f1,ens11f1d1 drv=i40e unused=igb_uio

Fuel diagnostic snapshot: