misc/105630: MAC spoofing

[Nyoman B Karna]

>Number:         105630
>Category:       misc
>Synopsis:       MAC spoofing
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          update
>Submitter-Id:   current-users
>Arrival-Date:   Fri Nov 17 09:10:01 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Nyoman B Karna
>Release:        5.4
>Organization:
STT Telkom
>Environment:
FreeBSD hosting.stttelkom.ac.id 5.4-RELEASE FreeBSD 5.4-RELEASE #0: Sun May  8 10:21:06 UTC 2005     root at harlow.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
hosting# tail /var/log/messages | grep arp
Oct 12 14:28:01 hosting kernel: arp: 10.14.203.118 moved from 00:00:00:00:00:00 to 00:0d:87:c1:61:90 on fxp0

how come the kernel allow MAC address 0000.0000.0000 ?
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: