04-25-2012
I know how to do this in a Sparc environment but I don't know whether it will work in a x86 environment (although I don't see why not). However, why do you need to do this? Obviously, this can be used to circumvent licensing enforcement so forum moderators might not be too happy about such a solution.
---------- Post updated at 04:11 PM ---------- Previous update was at 03:57 PM ----------
Also, I assume your base layer is Windows?? Have you looked at "macshift" (use Google). This might make it simple to change the MAC address at the bottom layer (the hostid is computed on the MAC address of the interface) thereby changing what Windows thinks it has. When Solaris starts it may well use the same MAC address and solve your problem. Just an after-thought.
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LEARN ABOUT SUSE
arpwatch
ARPWATCH(8) System Manager's Manual ARPWATCH(8)
NAME
arpwatch - keep track of ethernet/ip address pairings
SYNOPSIS
arpwatch [ -dN ] [ -f datafile ] [ -i interface ]
[ -n net[/width ]] [ -r file ] [ -u username ] [ -e username ] [ -s username ]
DESCRIPTION
Arpwatch keeps track for MAC/IP address pairings. It syslogs activity and reports certain changes via email. Arpwatch uses pcap(3) to lis-
ten for arp packets on a local ethernet/tokenring/fddi interface.
The -d flag is used enable debugging. This also inhibits forking into the background and emailing the reports. Instead, they are sent to
stderr.
The -f flag is used to set the MAC/IP address database filename. The default is arp.dat.
The -i flag is used to override the default interface.
The -n flag specifies additional local networks. This can be useful to avoid "bogon" warnings when there is more than one network running
on the same wire. If the optional width is not specified, the default netmask for the network's class is used.
The -N flag disables reporting any bogons.
The -r flag is used to specify a savefile (perhaps created by tcpdump(1) or pcapture(1)) to read from instead of reading from the network.
In this case, arpwatch does not fork.
If -u flag is used, arpwatch drops root privileges and changes user ID to username and group ID to that of the primary group of username.
This is recommended for security reasons.
If the -e flag is used, arpwatch sends e-mail messages to username rather than the default (root). If a single `-' character is given for
the username, sending of e-mail is suppressed, but logging via syslog is still done as usual. (This can be useful during initial runs, to
collect data without being flooded with messages about new stations.)
If the -s flag is used, arpwatch sends e-mail messages with username as the return address, rather than the default (root).
Note that an empty arp.dat file must be created before the first time you run arpwatch. Also, the default directory (where arp.dat is
stored) must be owned by username if -u flag is used.
REPORT MESSAGES
Here's a quick list of the report messages generated by arpwatch(1) (and arpsnmp(1)):
new activity
This MAC/IP address pair has been used for the first time six months or more.
new station
The MAC address has not been seen before.
flip flop
The MAC address has changed from the most recently seen address to the second most recently seen address. (If either the old or new
MAC address is a DECnet address and it is less than 24 hours, the email version of the report is suppressed.)
changed MAC address
The host switched to a new MAC address.
SYSLOG MESSAGES
Here are some of the syslog messages; note that messages that are reported are also sysloged.
MAC broadcast
The MAC address of the host is a broadcast address.
ip broadcast
The ip address of the host is a broadcast address.
bogon The source ip address is not local to the local subnet.
MAC broadcast
The source MAC address was all ones or all zeros.
MAC mismatch
The source MAC address didn't match the address inside the arp packet.
reused old MAC address
The MAC address has changed from the most recently seen address to the third (or greater) least recently seen address. (This is
similar to a flip flop.)
suppressed DECnet flip flop
A "flip flop" report was suppressed because one of the two addresses was a DECnet address.
FILES
/usr/operator/arpwatch - default directory
arp.dat - MAC/IP address database
ethercodes.dat - vendor ethernet block list
SEE ALSO
arpsnmp(8), arp(8), bpf(4), tcpdump(1), pcapture(1), pcap(3)
AUTHORS
Craig Leres of the Lawrence Berkeley National Laboratory Network Research Group, University of California, Berkeley, CA.
The current version is available via anonymous ftp:
ftp://ftp.ee.lbl.gov/arpwatch.tar.gz
BUGS
Please send bug reports to arpwatch@ee.lbl.gov.
Attempts are made to suppress DECnet flip flops but they aren't always successful.
Most error messages are posted using syslog.
4th Berkeley Distribution 8 October 2000 ARPWATCH(8)