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<p class="MsoNormal">Hi Experts,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> I am facing a problem while configuring strong swan IKEv2 with Transport mode and Nat in b/w. What I can see from the logs is strong swan is not sending the USE_TRANSPORT_MODE notify, and looks like its proposing the Tunnel mode.
Because of this, the server is saying “NO PROPOSAL CHOOSEN”. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My IPSec config: <o:p></o:p></p>
<p class="MsoNormal">(Example)<o:p></o:p></p>
<p class="MsoNormal"> conn host-host<o:p></o:p></p>
<p class="MsoNormal"> left=10.0.0.1<o:p></o:p></p>
<p class="MsoNormal"> right=20.0.0.2<o:p></o:p></p>
<p class="MsoNormal"> type=transport<o:p></o:p></p>
<p class="MsoNormal"> auto=add<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I would like to know, is it done purpose fully, or am I doing something wrong with the configuration? Or is it like TRANSPORT Mode + NAT is not supported by IKEv2? Because I saw some thread saying, if NAT is involved, strong swan IKEv2
automatically switches to Tunnel Mode(Thread from 2010 – so just to confirm this).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks in advance<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards<o:p></o:p></p>
<p class="MsoNormal">Anoop <o:p></o:p></p>
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