Why virtual functions are not appearing under "ip link show ethx" output in Red Hat Enterprise Linux 6 ?

Issue

• System not showing virtual functions for SR-IOV interface.

• On faulty host virtual functions ip link show output is not showing virtual functions.

• Example :

# ip link show p2p1
10: p2p1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff

#ip link show p3p1
p3p1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
    vf 0 MAC 1a:b1:b1:b1:b1:b1, vlan 30
    vf 1 MAC 1a:b1:b2:b2:b2:b2, vlan 30
    vf 2 MAC 1a:b1:b3:b3:b3:b3, vlan 30
    vf 3 MAC 1a:b1:b4:b4:b4:b4, vlan 30
    vf 4 MAC 1a:b1:b5:b5:b5:b5, vlan 30
    vf 5 MAC 1a:b1:b6:b6:b6:b6, vlan 30
    vf 6 MAC 1a:b1:b7:b7:b7:b7, vlan 30
    vf 7 MAC 1a:b1:b8:b8:b8:b8, vlan 30
    vf 8 MAC 1a:b1:b9:b9:b9:b9, vlan 30
    vf 9 MAC 1a:b1:b0:b0:b0:b0, vlan 30
    vf 10 MAC 5a:58:ef:76:19:7c, vlan 32
    vf 11 MAC 3a:b8:95:43:1c:2f, vlan 30
    vf 12 MAC c2:d8:0f:c3:42:bc, vlan 30
    vf 13 MAC fe:ff:f4:2f:69:69, vlan 30
    vf 14 MAC a2:94:55:5a:45:df, vlan 30
    vf 15 MAC 26:ce:53:ec:bf:d2, vlan 30