Hello,
I'm working with the latest
driver, a WinTV-Nova card and a RedHat 7.3 system. I've a suscription with
NETSYSTEM for accessing the Internet over satellite.
The problem I've is
that the dvb0_0 network interface receives all the NETSYSTEM transport stream
not just the packets destined to me, see my dvb0_0 interface with just 15
minutes uptime:
[root@SLIMDSAT root]# ifconfig
dvb0_0
dvb0_0 Link encap:Ethernet HWaddr
00:D0:5C:00:54:CA
inet
addr:192.168.238.238 Bcast:192.168.238.255
Mask:255.255.255.0
UP
BROADCAST RUNNING NOARP MULTICAST MTU:4096
Metric:1
RX
packets:7637586 errors:0 dropped:0 overruns:0
frame:0
TX packets:0
errors:0 dropped:0 overruns:0
carrier:0
collisions:0
txqueuelen:100
RX
bytes:1861038504 (1774.8 Mb) TX bytes:0 (0.0
b)
Base
address:0x1c3
If I start tcpdump in not promiscous mode I see a lot of traffic not related with me, exactly the same if I do it in promiscuous mode.
Another curious phenomenon is that my machine sees duplicated packets:
[root@SLIMDSAT root]# ping www.cisco.com
PING
www.cisco.com
(198.133.219.25) from 172.23.160.99 : 56(84) bytes of data.
64 bytes from
www.cisco.com
(198.133.219.25): icmp_seq=1 ttl=236 time=765 ms
64 bytes from www.cisco.com
(198.133.219.25): icmp_seq=1 ttl=236 time=765 ms (DUP!)
64 bytes from
www.cisco.com
(198.133.219.25): icmp_seq=2 ttl=236 time=826 ms
64 bytes from www.cisco.com
(198.133.219.25): icmp_seq=2 ttl=236 time=826 ms (DUP!)
c64 bytes from
www.cisco.com
(198.133.219.25): icmp_seq=3 ttl=236 time=777 ms
64 bytes from www.cisco.com
(198.133.219.25): icmp_seq=3 ttl=236 time=777 ms (DUP!)
64 bytes from
www.cisco.com
(198.133.219.25): icmp_seq=4 ttl=236 time=829 ms
64 bytes from www.cisco.com
(198.133.219.25): icmp_seq=4 ttl=236 time=829 ms (DUP!)
Any idea about what is happening and how to solve it?
Thanks !