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<p class="MsoNormal">I am bringing up a plugin to run IKEv2 using strongswan 5.8.1 and have a question about reauthentication. When reauthentication is initiated by the existing code outside of the plugin, it sends an INFORMATIONAL message to the peer to delete
the existing IKE as the first step. If this delete is processed completed first, then that would cause traffic to stop until a new IKE and its child are established for authentication.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In RFC 7296, Section 2.8.3 paragraph 3, reauthentication is described with the last sentence stating that deleting of the old IKE SA is the last step. So my question:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<li class="MsoListParagraph" style="margin-left:.25in;mso-list:l0 level1 lfo1">Why is Strongswan deleting the existing IKE SA as the first step in the reauthentication process which will clearly stop traffic temporarily.<o:p></o:p></li><ul style="margin-top:0in" type="circle">
<li class="MsoListParagraph" style="margin-left:.25in;mso-list:l0 level2 lfo1">Is a lower layer expected to manage the deletions so that traffic does not stop?<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:.25in;mso-list:l0 level2 lfo1">If yes, how does the lower layer know the difference between a shutdown from the peer and a reauthentication? The INFORMATIONAL message for these is exactly the same (Notify with
delete).<o:p></o:p></li></ul>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Chris<o:p></o:p></p>
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