Re: [PATCHv2] extensions: libxt_CHECKSUM extension

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>This adds a `CHECKSUM' target, which can be used in the iptables mangle 
>table.
>
>You can use this target to compute and fill in the checksum in a packet 
>that lacks a checksum.  This is particularly useful, if you need to 
>work around old applications such as dhcp clients, that do not work 
>well with checksum offloads, but don't want to disable checksum offload 
>in your device.
>
>The problem happens in the field with virtualized applications. For 
>reference, see Red Hat bz 605555, as well as 
>http://www.spinics.net/lists/kvm/msg37660.html

Added to Xtables-addons.
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