OVS-DPDK接口中的DPDK0是特殊网卡含义吗？

Question

看别人配置的过程 是将eth6和eth9加入dpdk绑定然后添加到ovs
但是ovs却设置个dpdk0是做什么呢

dpdk-devbind –s

dpdk-devbind --force --bind=ixgbe 0000:81:00.0

dpdk-devbind --force --bind=ixgbe 0000:81:00.1

dpdk-devbind --force --bind=igb_uio 0000:81:00.0

dpdk-devbind --force --bind=igb_uio 0000:81:00.1

ovs-vsctl del-port br-eth6 eth6

ovs-vsctl del-port br-eth9 eth9

ovs-vsctl -- set Interface dpdk0 type=dpdk options:dpdk-devargs= 0000:06:00.0,n_rxq=1

ovs-vsctl -- set Interface eth6 type=dpdk options:dpdk-devargs= 0000:81:00.0,n_rxq=1

ovs-vsctl -- set Interface eth7 type=dpdk options:dpdk-devargs= 0000:81:00.1,n_rxq=1