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Add FAQ 97a
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docs/FAQ.xml
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docs/FAQ.xml
@ -2256,6 +2256,36 @@ eth0 External 50mbit:200kb 5.0mbit:100kb:200ms:100mbit:<emphasis
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<programlisting><emphasis role="bold">ethtool -k eth<emphasis>N</emphasis> tso off gso off</emphasis></programlisting>
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</section>
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<section>
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<title>(FAQ 97a) I enable Shorewall traffic shaping and now my download
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rate is way below what I specified</title>
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<para><emphasis role="bold">Answer</emphasis>: This is likely due to
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Generic Receive Offload (GRO) being enabled in the network adapter. To
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verify, install the <firstterm>ethtool</firstterm> package and use the
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-k command:</para>
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<programlisting>root@gateway:/etc/shorewall# ethtool -k eth1
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Offload parameters for eth1:
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rx-checksumming: on
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tx-checksumming: on
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scatter-gather: on
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tcp-segmentation-offload: on
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udp-fragmentation-offload: off
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generic-segmentation-offload: on
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generic-receive-offload: <emphasis role="bold">on</emphasis>
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large-receive-offload: off
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ntuple-filters: off
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receive-hashing: off
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root@gateway:/etc/shorewall#
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</programlisting>
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<para>To work around the issue, use this command:</para>
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<programlisting><emphasis role="bold">ethtool -k eth</emphasis>N <emphasis
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role="bold">gro off</emphasis></programlisting>
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</section>
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</section>
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<section id="About">
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