title: why different pci slot use same device serial number?
body: <p>my questions are:</p>
  
  <p>1, why pci~02_00_0 and pci~02_00_1 use the same Device Serial Number(<strong>a0-36-9f-ff-ff-b6-dd-c2</strong>)?</p>
  
  <p>2, which pci slot is eth1(<strong>a0:36:9f:b6:dd:c3</strong>) corresponding to?</p>
  
  <p>details are below.</p>
  
  <blockquote>
    <p>*[root@localhost ~]# lspci |grep Ethernet</p>
    
    <p>02:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network
    Connection (rev 01)</p>
    
    <p>02:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network
    Connection (rev 01)</p>
    
    <p>06:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network
    Connection (rev 03)</p>
    
    <p>07:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network
    Connection (rev 03)</p>
    
    <p>[root@localhost ~]# lspci -vv -s 02:00.0 |grep Serial</p>
    
    <p>Capabilities: [140 v1] Device Serial Number
    <strong>a0-36-9f-ff-ff-b6-dd-c2</strong></p>
    
    <p>[root@localhost ~]# lspci -vv -s 02:00.1 |grep Serial</p>
    
    <p>Capabilities: [140 v1] Device Serial Number
    <strong>a0-36-9f-ff-ff-b6-dd-c2</strong></p>
    
    <p>[root@localhost ~]# lspci -vv -s 06:00.0 |grep Serial</p>
    
    <p>Capabilities: [140 v1] Device Serial Number 0c-c4-7a-ff-ff-97-80-a2</p>
    
    <p>[root@localhost ~]# lspci -vv -s 07:00.0 |grep Serial</p>
    
    <p>Capabilities: [140 v1] Device Serial Number 0c-c4-7a-ff-ff-97-80-a3</p>
    
    <p>[root@localhost ~]# ip link ls</p>
    
    <p>1: lo:  mtu 65536 qdisc noqueue state UNKNOWN
    mode DEFAULT
        link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00</p>
    
    <p>2: eth0:  mtu 1500 qdisc mq master
    ovs-system state UP mode DEFAULT qlen 1000
        link/ether a0:36:9f:b6:dd:c2 brd ff:ff:ff:ff:ff:ff</p>
    
    <p>3: eth1:  mtu 1500 qdisc mq state UP
    mode DEFAULT qlen 1000
        link/ether <strong>a0:36:9f:b6:dd:c3</strong> brd ff:ff:ff:ff:ff:ff</p>
    
    <p>4: eth2:  mtu 1500 qdisc mq state UP
    mode DEFAULT qlen 1000
        link/ether 0c:c4:7a:97:80:a2 brd ff:ff:ff:ff:ff:ff</p>
    
    <p>5: eth3:  mtu 1500 qdisc mq state
    DOWN mode DEFAULT qlen 1000
        link/ether 0c:c4:7a:97:80:a3 brd ff:ff:ff:ff:ff:ff*</p>
  </blockquote>