Public bug reported:
Binary package hint: libpcap-ruby1.8
Hi,
the libpcap-ruby1.8 does not seem to work with ppp devices.
I ran the example program /usr/share/doc/libpcap-
ruby1.8/examples/httpdump.rb on a computer that is connected with
Ethernet to a LAN, and it worked.
I tried the same example on a computer that is not connected through
ethernet, but with a UMTS mobile phone via USB, /dev/ttyACM0 and a ppp
daemon. The daemon opens the IP interface ppp0, which is a point-to-
point-Interface:
# ifconfig ppp0
ppp0 Link encap:Point-to-Point Protocol
inet addr:10.161.204.249 P-t-P:10.6.6.6 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:4410 errors:0 dropped:0 overruns:0 frame:0
TX packets:3662 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:5304327 (5.0 MB) TX bytes:346052 (337.9 KB)
In order to use that interface I modified the example program and added "-i
ppp0":
httpdump = Pcaplet.new('-s 1500 -i ppp0')
When i run it, it waits. But when I issue the first HTTP request the program
aborts with the
error message
# ruby /tmp/httpdump.rb
1 packets received by filter
0 packets dropped by kernel
/usr/lib/ruby/1.8/pcaplet.rb:90:in `loop': Unknown data-link type (113)
(Pcap::PcapError)
from /usr/lib/ruby/1.8/pcaplet.rb:90:in `each_packet'
from /tmp/httpdump.rb:9
libpcap0.8 defines type 113 as
#define LINKTYPE_LINUX_SLL 113 /* Linux cooked socket
capture */
so this is a regular type and should be supported.
regards
Hadmut
** Affects: libpcap-ruby (Ubuntu)
Importance: Undecided
Status: New
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libpcap-ruby doesn't work with ppp devices
https://bugs.launchpad.net/bugs/201737
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