dns: overflow unpacking uint16 about dns HOT 2 CLOSED

Frame 77: 647 bytes on wire (5176 bits), 647 bytes captured (5176 bits)
Ethernet II, Src: Apple_5b:5a:9c (b8:e6:0c:5b:5a:9c), Dst: ZhejiangEver_2f:c3:27 (c0:4a:09:2f:c3:27)
Internet Protocol Version 4, Src: 192.168.121.199, Dst: 192.168.121.1
User Datagram Protocol, Src Port: 5353, Dst Port: 58984
Multicast Domain Name System (response)
    Transaction ID: 0x0000
    Flags: 0x8400 Standard query response, No error
    Questions: 1
    Answer RRs: 1
    Authority RRs: 0
    Additional RRs: 5
    Queries
    Answers
    Additional records
        LeiGod的MacBook Pro._airplay._tcp.local: type SRV, class IN, priority 0, weight 0, port 7000, target LeiGoddeMacBook-Pro.local
            Instance: LeiGod的MacBook Pro
            Service: _airplay
            Protocol: _tcp
            Name: local
            Type: SRV (33) (Server Selection)
            .000 0000 0000 0001 = Class: IN (0x0001)
            0... .... .... .... = Cache flush: False
            Time to live: 10 (10 seconds)
            Data length: 28
            Priority: 0
            Weight: 0
            Port: 7000
            Target: LeiGoddeMacBook-Pro.local
        LeiGod的MacBook Pro._airplay._tcp.local: type TXT, class IN
            Name: LeiGod的MacBook Pro._airplay._tcp.local
            Type: TXT (16) (Text strings)
            .000 0000 0000 0001 = Class: IN (0x0001)
            0... .... .... .... = Cache flush: False
            Time to live: 10 (10 seconds)
            Data length: 350
            TXT Length: 5
            TXT: acl=0
            TXT Length: 26
            TXT: deviceid=B8:E6:0C:5B:5A:9C
            TXT Length: 16
            TXT: fex=1c9/St5PFbgG
            TXT Length: 30
            TXT: features=0x4A7FCFD5,0xB8154FDE
            TXT Length: 11
            TXT: flags=0x204
            TXT Length: 40
            TXT: gid=8E348CD8-2928-4B49-9743-B0293B7E0D67
            TXT Length: 5
            TXT: igl=0
            TXT Length: 6
            TXT: gcgl=0
            TXT Length: 20
            TXT: model=MacBookPro18,1
            TXT Length: 4
            TXT: at=4
            TXT Length: 13
            TXT: protovers=1.1
            TXT Length: 39
            TXT: pi=80e94178-d837-4227-8de6-0e918dd0a931
            TXT Length: 40
            TXT: psi=7830194B-3C44-4124-A8FA-23D611162DCD
            TXT Length: 67
            TXT: pk=914348c94ca942851d028142b7b81c1411688849022c9e7906a35fa35033f3c2
            TXT Length: 13
            TXT: srcvers=605.1
        LeiGod的MacBook Pro._device-info._tcp.local: type TXT, class IN
            Name: LeiGod的MacBook Pro._device-info._tcp.local
            Type: TXT (16) (Text strings)
            .000 0000 0000 0001 = Class: IN (0x0001)
            0... .... .... .... = Cache flush: False
            Time to live: 10 (10 seconds)
            Data length: 41
            TXT Length: 20
            TXT: model=MacBookPro18,1
            TXT Length: 10
            TXT: osxvers=21
            TXT Length: 8
            TXT: icolor=1
        LeiGoddeMacBook-Pro.local: type AAAA, class IN, addr fe80::18bd:aa26:620:8e11
            Name: LeiGoddeMacBook-Pro.local
            Type: AAAA (28) (IP6 Address)
            .000 0000 0000 0001 = Class: IN (0x0001)
            0... .... .... .... = Cache flush: False
            Time to live: 10 (10 seconds)
            Data length: 16
            AAAA Address: fe80::18bd:aa26:620:8e11
        LeiGoddeMacBook-Pro.local: type A, class IN, addr 192.168.121.199
            Name: LeiGoddeMacBook-Pro.local
            Type: A (1) (Host Address)
            .000 0000 0000 0001 = Class: IN (0x0001)
            0... .... .... .... = Cache flush: False
            Time to live: 10 (10 seconds)
            Data length: 4
            Address: 192.168.121.199
    [Request In: 47]
    [Time: 0.044878000 seconds]