----- Original Message ----- 
From: "boink" <[EMAIL PROTECTED]>
To: <freebsd-questions@freebsd.org>
Sent: Monday, April 03, 2006 6:06 PM
Subject: arp -a takes 40 secs to display cached MAC addresses. Is

Dear FreeBSD,

# uname -a
FreeBSD MyFBSD.int.vir 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Thu Nov  3
09:36:13 UTC 2005
[EMAIL PROTECTED]:/usr/obj/usr/src/sys/GENERIC  i386

# /usr/bin/time -h arp -a
MyFBSD ( at 00:00:f8:10:6c:8a on dc0 permanent [ethernet]
MyFirewall ( at 00:0d:b9:11:a5:b9 on dc0 [ethernet]
? ( at ff:ff:ff:ff:ff:ff on dc0 permanent [ethernet]
        40.22s real             0.00s user              0.00s sys


arp is attempting to do a reverse-DNS lookup on  No answer is
received from your DNS server in the allowable time-out interval, so it
displays the name as '?'.

Redo the same test using 'arp -a -n' and you'll see it complete immediately.

Matt Emmerton

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