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Date: Tue, 6 May 2003 00:30:22 -0700 (PDT)
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To: freebsd-bugs@FreeBSD.org
From: Vincent Jardin <vjardin@wanadoo.fr>
Subject: Re: kern/51831: ATM/HARP BPF support
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The following reply was made to PR kern/51831; it has been noted by GNATS.

From: Vincent Jardin <vjardin@wanadoo.fr>
To: freebsd-gnats-submit@FreeBSD.org, vjardin@free.fr
Cc:  
Subject: Re: kern/51831: ATM/HARP BPF support
Date: Tue, 6 May 2003 09:25:39 +0200

 For example, now you can get the LLC/SNAP header with tcpdump:
 
 su-2.05b# atm add pvc hva1 3 40 AAL5 SNAP IP atm0 1.1.2.3
 su-2.05b# atm show ipvcc
 Net Intf  VPI   VCI  State   Flags IP Address
 atm0        1    40  ACTIVE  PM    1.1.2.2
 atm0        3    40  ACTIVE  PLM   1.1.2.3
 su-2.05b# atm show vcc
 Interface  VPI   VCI  AAL   Type Dir    State    Encaps   Owner
 hva1         1    40  AAL5  PVC  InOut  ACTIVE   Null     IP
 hva1         3    40  AAL5  PVC  InOut  ACTIVE   LLC/SNAP IP
 su-2.05b# ifconfig atm0
 atm0: flags=3D43<UP,BROADCAST,RUNNING> mtu 9180
         inet 1.1.1.1 netmask 0xffff0000 broadcast 1.1.255.255
         ether 00:19:e1:6a:a3:f2
 
 $ ping 1.1.2.3
 
 su-2.05b# tcpdump -nXi atm0
 tcpdump: listening on atm0
 09:22:20.540119 1.1.1.1 > 1.1.2.3: icmp: echo request
 0x0000   aaaa 0300 0000 0800 4500 0054 05c6 0000        ........E..T....
 0x0010   4001 6fde 0101 0101 0101 0203 0800 cc1b        @.o.............
 0x0020   f702 1500 ac62 b73e c93c 0800 0809 0a0b        .....b.>.<......
 0x0030   0c0d 0e0f 1011 1213 1415 1617 1819 1a1b        ................
 0x0040   1c1d 1e1f 2021 2223 2425 2627 2829 2a2b        .....!"#$%&'()*+
 0x0050   2c2d 2e2f 3031 3233 3435 3637                  ,-./01234567
 
 su-2.05b# tcpdump -nvi atm0
 tcpdump: listening on atm0
 09:22:25.590190 snap 0:0:0:8:0 1.1.1.1 > 1.1.2.3: icmp: echo request (ttl=
  64,=20
 id 1493, len 84)