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<br>
<p><b>Since NETKEY does not have ipsecX interfaces, it does not require a leftnexthop.<br>
</b>
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<p>
Joseph HyunWook Cha<br>
<br>
The truth will set you free !!!<br>
<br>
Software Engineer <br>
Development Part 1. I/Infra <br>
Network System Division <br>
Tel 031-279-3804 Mobile 010-3024-3804<br>
<br>
------- Original Message -------<br>
Sender : Paul Wouters<paul@xelerance.com> <br>
Date : 2007-12-01 04:50 (GMT+09:00)<br>
Title : Re: [Openswan Users] Question about leftnexthop<br>
configuration.(Retransmission)<br>
<br>
On Fri, 30 Nov 2007, ??? wrote:<br>
<br>
><br>
> We are using Openswan for our router products. While satisfied with almost everything, I want to ask a basic question via this mailing list.<br>
> Why should users configure leftnexthop parameters explicitly?<br>
> As long as I know, this field is not relevent to the IPSec protocol and packet forwarding is determined by routing table.<br>
<br>
It is only used by KLIPS, which provides virtual interfaces (ipsecX)<br>
bound to real interfaces (ethX, pppX). It needs to know which interface to<br>
send the packet out after it received it on an ipsecX interface. Mostly,<br>
this can be determined by looking at which interface the default route<br>
points to, but somethings people have odd settings, or their default<br>
route goes another way then the intended encrypted packet should go.<br>
<br>
Since NETKEY does not have ipsecX interfaces, it does not require a leftnexthop.<br>
<br>
Paul, still hoping for more resoures to work on merging KLIPS and NETKEY to<br>
be the best of both worlds.<br>
<br>
<br>
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