From: Andrew Morton <akpm@linux-foundation.org>
To: netdev@vger.kernel.org
Cc: bugme-daemon@bugzilla.kernel.org, pawel@rogocz.com
Subject: Re: [Bugme-new] [Bug 9812] New: Kernel does not deliver packets going through the INPUT chain even if the app is listening on IN_ADDR_ANY
Date: Fri, 25 Jan 2008 05:14:04 -0800 [thread overview]
Message-ID: <20080125051404.3bbefab3.akpm@linux-foundation.org> (raw)
In-Reply-To: <bug-9812-10286@http.bugzilla.kernel.org/>
> On Fri, 25 Jan 2008 03:59:27 -0800 (PST) bugme-daemon@bugzilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=9812
>
> Summary: Kernel does not deliver packets going through the INPUT
> chain even if the app is listening on IN_ADDR_ANY
> Product: Networking
> Version: 2.5
> KernelVersion: 2.6.22-14
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: Netfilter/Iptables
> AssignedTo: networking_netfilter-iptables@kernel-bugs.osdl.org
> ReportedBy: pawel@rogocz.com
>
>
> Latest working kernel version: never worked
> Earliest failing kernel version:
> Distribution: ubuntu 7.10
>
> Problem Description:
>
> I have a farm of web servers behind a load balancer in DSR mode.
> I would like to be able to dump packets with any IP address on the web servers
> through the load balancer and have web servers reply to these requests.
> Currently for every IP web servers are supposed to reply to, I have to
> configure the IP on all servers on their loopback interfaces. The web server
> listens on IN_ADDR_ANY and I am forcing packets into the INPUT chain via
> iptables/netfilter but the kernel never replies to any connection requests. I
> only see the counter for OutNoRoutes increasing.
>
> Steps to reproduce:
>
> web server:
>
> #iptables -A PREROUTING -i eth0 -t mangle -p tcp --dport 80 -j MARK --set-mark
> 1
> #ip route add to local default dev lo protocol kernel table 1
> #ip rule add fwmark 1 table 1 priority 1
>
> client:
>
> #ip route add 1.1.1.1/32 via <web server IP> dev eth0
>
> while making requests to 1.1.1.1:80 from the client you can see increasing
> OutNoRoutes counter but no connection ever takes place.
>
>
next parent reply other threads:[~2008-01-25 13:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-9812-10286@http.bugzilla.kernel.org/>
2008-01-25 13:14 ` Andrew Morton [this message]
2008-01-25 13:17 ` [Bugme-new] [Bug 9812] New: Kernel does not deliver packets going through the INPUT chain even if the app is listening on IN_ADDR_ANY Patrick McHardy
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