<div dir="ltr"><div class="gmail_quote"><div dir="ltr"><span style="font-size:12.8px">Hi,</span><br style="font-size:12.8px"><br style="font-size:12.8px"><span style="font-size:12.8px">I am testing the Strongswan solution between two servers in my lab.</span><br style="font-size:12.8px"><span style="font-size:12.8px">OS : Ubuntu 14.04</span><br style="font-size:12.8px"><span style="font-size:12.8px">StrongSwan : 5.1.2</span><br style="font-size:12.8px"><br style="font-size:12.8px"><span style="font-size:12.8px">I observed today weird behaviour of our StrongSwan server when an even IP</span><br style="font-size:12.8px"><span style="font-size:12.8px">address is used on the WAN interface. Half of my CPUs are full when I used</span><br style="font-size:12.8px"><span style="font-size:12.8px">10.0.0.2 on my WAN interface, and it falls back to 0.3% of use when the IP</span><br style="font-size:12.8px"><span style="font-size:12.8px">address is 10.0.0.1 (odd). Same results with 10.0.0.3.</span><br style="font-size:12.8px"><span style="font-size:12.8px">I tried different mix (even to odd, odd to odd, even to even) on both</span><br style="font-size:12.8px"><span style="font-size:12.8px">servers. The behaviour is reproducible.</span><br style="font-size:12.8px"><br style="font-size:12.8px"><span style="font-size:12.8px">Random information :</span><br style="font-size:12.8px"><span style="font-size:12.8px">- irqbalance is enabled</span><br style="font-size:12.8px"><span style="font-size:12.8px">- servers are AESNI capable</span><br style="font-size:12.8px"><br style="font-size:12.8px"><span style="font-size:12.8px">Did any of you ever experience such behaviour? Should the use of an odd IP</span><br style="font-size:12.8px"><span style="font-size:12.8px">address on the WAN interface be considered as a prerequisite?</span><br style="font-size:12.8px"><br style="font-size:12.8px"><span style="font-size:12.8px">Regards,</span><br style="font-size:12.8px"><br style="font-size:12.8px"><span style="font-size:12.8px">Val</span><br></div>
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