Date: Tue, 15 Sep 2009 23:03:00 +0900 From: Hiroharu Tamaru <tamaru@myn.rcast.u-tokyo.ac.jp> To: "Li, Qing" <qing.li@bluecoat.com> Cc: freebsd-net@freebsd.org, ccowart@rescomp.berkeley.edu, freebsd-current@freebsd.org, erikk@berkeley.edu Subject: Re: 8.0-BETA4 not responding to ARP for published entries Message-ID: <sa6zl8w71bf.wl%tamaru@myn.rcast.u-tokyo.ac.jp> In-Reply-To: <B583FBF374231F4A89607B4D08578A43046736AD@bcs-mail03.internal.cacheflow.com> References: <20090914174309.GF37291@hal.rescomp.berkeley.edu> <sa61vm97zyk.wl%tamaru@myn.rcast.u-tokyo.ac.jp> <B583FBF374231F4A89607B4D08578A43046736AD@bcs-mail03.internal.cacheflow.com>
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Hi, At Mon, 14 Sep 2009 21:50:47 -0700, Li, Qing wrote: > Hi, > > Please try patch at > > http://people.freebsd.org/~qingli/proxy-arp-patch.diff > > -- Qing Thanks for taking care of it. I tried it, and now proxy arp works on the patched FreeBSD 8.0-CURRENT-200902/amd64 as expected. Thanks! Could it be considered important enough to make it into 8.0-RELEASE at this final stage? Hope it will, but if not, please consider to point it out in the release note. Hiroharu Tamaru > -----Original Message----- > From: owner-freebsd-net@freebsd.org on behalf of Hiroharu Tamaru > Sent: Mon 9/14/2009 6:34 PM > To: freebsd-net@freebsd.org > Subject: Re: 8.0-BETA4 not responding to ARP for published entries > > > At Mon, 14 Sep 2009 10:43:09 -0700, Chris Cowart wrote: > > We have a system which makes heavy use of published arp entries. I know > > the arp code has been significantly overhauled in 8, but it looks like > > this functionality is now broken. > > > > $ arp -s 172.16.132.100 00:0c:29:16:bd:49 pub > > > > If I watch tcpdump on the interface, I see arp requests come in but no > > replies are sent. This is a clean build with no firewalls enabled. > > Just for another datapoint, I see the same symptom. > I am currently running ports/net-mgmt/choparp as a workaround. > > At Thu, 23 Apr 2009 21:13:51 +0900, Hiroharu Tamaru wrote: > > Subject: proxy arp on 8.0-current? > > Date: Thu, 23 Apr 2009 21:13:51 +0900 > > To: freebsd-net@freebsd.org > > > > Hi, > > > > I'm trying to setup an proxy arp on a dual homed host. > > > > I noticed that I cannot set it up on 8.0-current the same way as I > > could on 6.2; hence the question: have the setup procedure changed > > recently (when the arp table was separated from the routing table, > > maybe?)? My 8.0-current is from 200902 snapshot. > > > > Here is a simple demonstration using two single-interfaced hosts: > > > > setup: > > host6.2# ifconfig em0 inet 192.168.0.1/24 > > host6.2# arp -s 192.168.0.11 auto pub > > host6.2# arp -an | grep permanent > > ? (192.168.0.1) at 00:16:d3:xx:xx:xx on em0 permanent [ethernet] > > ? (192.168.0.11) at 00:16:d3:xx:xx:xx on em0 permanent published [ethernet] > > host6.2# tcpdump -np arp > > > > host8.0# ifconfig em0 inet 192.168.0.2/24 > > host8.0# arp -s 192.168.0.12 auto pub > > host8.0# arp -an | grep permanent > > ? (192.168.0.2) at 00:0c:29:xx:xx:xx on em0 permanent [ethernet] > > ? (192.168.0.12) at 00:0c:29:xx:xx:xx on em0 permanent published [ethernet] > > host8.0# tcpdump -np arp > > > > then, I do: > > host6.2# arp -d 192.168.0.2; ping -c 1 192.168.0.2 > > host6.2# arp -d 192.168.0.12; ping -c 1 192.168.0.12 > > host8.0# arp -d 192.168.0.1; ping -c 1 192.168.0.1 > > host8.0# arp -d 192.168.0.11; ping -c 1 192.168.0.11 > > > > I am not caring about 'arp -d' errors (cannot locate) nor ping not > > responding (for proxied addresses). I just cared about arp requests and > > replys for now. The output of tcpdump on both sides are like this: > > > > arp who-has 192.168.0.2 tell 192.168.0.1 > > arp reply 192.168.0.2 is-at 00:0c:29:xx:xx:xx > > > > arp who-has 192.168.0.12 tell 192.168.0.1 > > ---->no reply > > > > arp who-has 192.168.0.1 tell 192.168.0.2 > > arp reply 192.168.0.1 is-at 00:16:d3:xx:xx:xx > > > > arp who-has 192.168.0.11 tell 192.168.0.2 > > arp reply 192.168.0.11 is-at 00:16:d3:xx:xx:xx > > > > As you can see from the above, > > 'arp -s 192.168.0.12 auto pub' on 8.0-current host > > seems not to be producing proxy arp's. > > > > What am I missing? > > > > Thanks. > > -- > > Hiroharu Tamaru
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