Date: Wed, 13 Feb 2013 12:35:37 -0800 (PST) From: Jin Guojun <jguojun@sbcglobal.net> To: questions freebsd <questions@freebsd.org> Subject: Why ue0 do ARP on non local address when using static route? Message-ID: <1360787737.17354.YahooMailRC@web180906.mail.ne1.yahoo.com>
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This is 8.3-Release on a HP EliteBook 8460p (4-core i5) with an on board Intel
(em0) interface.
When attached a Trendent TU2-ET100 USB Ether dongle for a second interface, it
has no problem to talk to the local network (10.234.37.0/24), but it has problem
to talk to a remote network or host (10.227.148.0/24) via eu0 interface.
When a remote host ping this host or this host ping that remote host, ARP
request is always showing up.
A static route is set and remote host is no part of the local sub net, why ARP
is going on?
Is any sysctl parameter can fix this problem?
-Jin
Internet:
Destination Gateway Flags Refs Use Netif Expire
default 10.234.16.1 UGS 0 2841993 em0
10.227.148.52 10.234.37.80 UHS 0 26 ue0
10.234.16.0/22 link#1 U 0 0 em0
10.234.17.41 link#1 UHS 0 0 lo0
10.234.37.0/24 link#8 U 0 3 ue0
10.234.37.80 link#8 UHS 0 0 lo0
127.0.0.1 link#7 UH 0 492 lo0
ue0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=80008<VLAN_MTU,LINKSTATE>
ether 00:50:b6:00:a4:91
inet 10.234.37.80 netmask 0xffffff00 broadcast 10.234.37.255
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
ping from 10.227.148.52
12:16:37.924425 IP 10.227.148.52 > 10.234.37.80: ICMP echo request, id 21002,
seq 1, length 64
12:16:37.924442 ARP, Request who-has 10.227.148.52 tell 10.234.37.80, length 28
12:16:38.931919 IP 10.227.148.52 > 10.234.37.80: ICMP echo request, id 21002,
seq 2, length 64
12:16:38.931937 ARP, Request who-has 10.227.148.52 tell 10.234.37.80, length 28
12:16:39.931662 IP 10.227.148.52 > 10.234.37.80: ICMP echo request, id 21002,
seq 3, length 64
12:16:39.931680 ARP, Request who-has 10.227.148.52 tell 10.234.37.80, length 28
12:16:40.931656 IP 10.227.148.52 > 10.234.37.80: ICMP echo request, id 21002,
seq 4, length 64
12:16:40.931674 ARP, Request who-has 10.227.148.52 tell 10.234.37.80, length 28
12:16:41.931519 IP 10.227.148.52 > 10.234.37.80: ICMP echo request, id 21002,
seq 5, length 64
12:16:41.931533 ARP, Request who-has 10.227.148.52 tell 10.234.37.80, length 28
12:16:42.931643 IP 10.227.148.52 > 10.234.37.80: ICMP echo request, id 21002,
seq 6, length 64
ping to 10.227.148.52
12:16:42.931661 ARP, Request who-has 10.227.148.52 tell 10.234.37.80, length 28
12:16:59.724724 ARP, Request who-has 10.227.148.52 tell 10.234.37.80, length 28
12:17:00.725715 ARP, Request who-has 10.227.148.52 tell 10.234.37.80, length 28
12:17:01.725883 ARP, Request who-has 10.227.148.52 tell 10.234.37.80, length 28
12:17:02.726690 ARP, Request who-has 10.227.148.52 tell 10.234.37.80, length 28
12:17:03.727677 ARP, Request who-has 10.227.148.52 tell 10.234.37.80, length 28
^C
45 packets captured
1557 packets received by filter
From owner-freebsd-questions@FreeBSD.ORG Wed Feb 13 21:08:43 2013
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Date: Wed, 13 Feb 2013 15:13:06 -0600 (CST)
From: Robert Bonomi <bonomi@mail.r-bonomi.com>
Message-Id: <201302132113.r1DLD6DX003167@mail.r-bonomi.com>
To: tundra@tundraware.com
Subject: Re: Fun Scripting Problem
In-Reply-To: <511BDB13.3060005@tundraware.com>
Cc: freebsd-questions@freebsd.org
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> Date: Wed, 13 Feb 2013 12:27:31 -0600
> From: Tim Daneliuk <tundra@tundraware.com>
> Subject: Fun Scripting Problem
>
> I know how to do this in Python, but I really want to do it in
> straight Bourne shell. I have some ideas, but I thought I'd
> give you folks a crack at this Big Fun:
>
> a) You have a directory of files - say they're logs - generated
> at nondeterministic intervals. You may get more than one a day,
> more than one a month, none, or hundreds.
>
> b) To conserve space, you want to keep the last file generated
> in any given month (the archive goes back for an unspecified
> number of years), and delete all the files generated prior to
> that last file in that same month.
>
> c) Bonus points if the problem is solved generally for either files
> or directories generated as described above.
>
> These are not actually logs, and no, I don't think logrotate can
> do this ... or can it?
here's a one-liner:
rm ` \
stat -f "%SB %B %N" * \
| sort -k5nr \
| cut -c1-7,17-20,32- \
| awk 'BEGIN {a="";b=0;c=0} $1==a && $2==b && $3=c {print $4;}{a=$1;b=$2;c=$3}' \
`
This selects on creation date. change the B (both of them) in the stat
call to use a different timestamp
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