misc/140358: arp: writing to routing socket: Invalid argument with -S key usage

[Oleg Ginzburg]

>Number:         140358
>Category:       misc
>Synopsis:       arp: writing to routing socket: Invalid argument with -S key usage
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Nov 07 14:30:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Oleg Ginzburg
>Release:        8.0-RC2
>Organization:
>Environment:
FreeBSD localhost.my.domain 8.0-RC2 FreeBSD 8.0-RC2 #0: Thu Nov  5 20:13:11 MSK 2009     root at localhost.my.domain:/usr/obj/usr/src/sys/GENERIC-VIMAGE  amd64
>Description:
When i try 

/usr/sbin/arp -S IP 0:24:21:51:b1:1e pub

(where IP from my networks)

arp works successful and return errors message:

arp: writing to routing socket: Invalid argument

Some soft who analyzing return code (for example, net/mpd5 with proxy-arp settings) work incorrectly when doing system(3) for /usr/sbin/arp.

With 7x branch behaviors is fine

>How-To-Repeat:

>Fix:


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