02-11-2013
Maybe not IP packets?
Is it different if you check for ipv6 explicitly?
Last edited by DGPickett; 02-11-2013 at 03:16 PM..
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SNOOPY(8) System Manager's Manual SNOOPY(8)
NAME
snoopy - spy on Ethernet packets
SYNOPSIS
snoopy [ -abceiltup9 ] [ -np ] [ -N count ]
DESCRIPTION
Snoopy displays the header and first 20 data bytes of packets received from the local Ethernet. The packets displayed depend on the
options chosen. The following options each select packets from a particular protocol. If more than one flag is given, packets from all
those protocols are displayed.
a ARP
b BOOTP
c ICMP
e all Ethernet packets
i IP
l IL
t TCP
u UDP
By default all addresses are translated into system names. The option n suppresses this.
Snoopy runs in promiscuous mode by default, displaying all packets it can capture from the Ethernet. The option p causes only packets sent
to or from the system snoopy is running on to be displayed.
Option 9 causes the data of TCP and IL messages to be interpreted and displayed as 9P messages. The N option sets the count (default 20)
of the number of bytes to dump in hexadecimal from each packet.
FILES
/net/ether
Ethernet device
SOURCE
/sys/src/cmd/ip/snoopy.c
BUGS
The CPU servers do not take well to running in promiscuous mode. If run on them, snoopy may kill their Ethernets.
SNOOPY(8)