Re: [PATCH] nfnetlink_log mac address for 6in4 tunnels

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On Thu, Dec 13, 2012 at 10:37:02AM -0700, Bob Hockney wrote:
> 
> For tunneled ipv6in4 packets, the LOG target (xt_LOG.c) adjusts the start of
> the mac field to start at the ethernet header instead of the ipv4 header for
> the tunnel.  This patch conforms what is passed by the NFLOG target through
> nfnetlink to what the LOG target does.  Code borrowed from xt_LOG.c.
> 
> Here are before and after log lines.  The kernel: lines are with the LOG
> target, the ulogd lines are with NFLOG, ulogd and its SYSLOG  plugin:
> 
> Log lines for the same packet, before patch:
> 
> Dec  3 09:07:22 gateway kernel: [   69.268396] INVALID IN=he-ipv6 OUT=eth1
> MAC=00:50:8d:bf:02:01:68:ef:bd:f0:7d:d9:08:00:45:00:00:5c:00:00:40:00:fa:29:
> 64:c2:42:dc:12:2a:18:31:ae:7f TUNNEL=66.220.18.42->w.x.y.z SRC= ...
> Dec  3 09:07:22 gateway ulogd[1628]: INVALID  IN=he-ipv6 OUT=eth1
> MAC=45:00:00:5c:00:00:40:00:fa:29:64:c2:42:dc:12:2a:18:31:ae:7f:68:00:00:00:
> 00:20:06:35:2a:03:28:80:00:10 SRC= ...
> 
> Log lines after patch:
> 
> Dec  3 09:08:44 gateway kernel: [   32.998288] INVALID IN=he-ipv6 OUT=eth1
> MAC=00:50:8d:bf:02:01:68:ef:bd:f0:7d:d9:08:00:45:00:00:5c:00:00:40:00:fa:29:
> 64:c2:42:dc:12:2a:18:31:ae:7f TUNNEL=66.220.18.42->w.x.y.z SRC= ...
> Dec  3 09:08:45 gateway ulogd[1488]: INVALID  IN=he-ipv6 OUT=eth1
> MAC=00:50:8d:bf:02:01:68:ef:bd:f0:7d:d9:08:00:45:00:00:5c:00:00:40:00:fa:29:
> 64:c2:42:dc:12:2a:18:31:ae:7f SRC= ...

Applied.

Please, next time you have to base your patch on some recent linux
kernel tree. You can get it via git or just some snapshot via
kernel.org, I'm telling this because I had to rebase this patch upon
current.

Thanks Bob.
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