Root cause: 

    APV lacks iavf driver, so the 100G vf can't be detected.
Soultion:

    Patch iavf driver into DPDK.

AN(config)#show interface port2
port2(port2): flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500

        inet6 fe80::44e4:8bff:fe00:a268 prefixlen 64 scopeid 0x2

        inet 5.5.5.5 netmask 0xffffff00 broadcast 5.5.5.255

        ether 46:e4:8b:00:a2:68

        media: autoselect

        status: no carrier

        webwall status: OFF

        Hardware is Intel adaptive vf

        Input queue: 0/4096 (size/max)

                total: 0 packets, good: 0 packets, 0 bytes

                0 overruns

        Output queue: 0/512 (size/max)

                total: 0 packets, good:  0 packets, 0 bytes

                0 output errors

        0 lost carrier

        packet drop (not permit): 0

                tcp 0          udp 0          icmp 0          ah 0          esp 0

        packet drop (deny): 0

                tcp 0          udp 0          icmp 0          ah 0          esp 0

        300 seconds input rate 0 bits/sec, 0 packets/sec

        300 seconds output rate 0 bits/sec, 0 packets/sec