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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>I just noticed this. One of my ipsec systems hung a few days ago. Thinking I had a hardware problem, I started building up a replacement. Checking it out, I noticed my Internet tunnel facing NIC somehow took on the IP Address of the LAN facing NIC. This was strange. Digging deeper, I see what’s going on. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The LAN side is 172.21.99.100/24 on device eth1. The Internet side (obfuscated) is 1.2.123.217/30 on device eth0.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>When I put leftsourceip=172.21.99.11 in my conn definition, after starting ipsec, I see this IP Address - but with a /16 – assigned to eth0, the Internet facing NIC. What’s up with that? When I comment out the leftsourceip line, the IP Addresses for all NICs look as expected. I can get rid of the leftsourceip and rightsourceip lines – I put them in to help troubleshoot problems when they come up because I don’t always have the ability to get at systems behind the tunnel. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>But this behavior is a new surprise – it never used to behave like this and I have several dozen systems set up this way. Why in the world did Openswan start assigning a private IP Address to the tunnel facing NIC? And can/should I do anything about it?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The new behavior happens with both 2.6.29 and 2.6.31 running on Fedora 14. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Here’s the relevant portion of the conn definition with the public IP addresses obfuscated. The leftsourceip is part of the leftsubnet – yet it ended up being assigned to the tunnel facing NIC with a /16 mask. Commenting out the leftsourceip line gets rid of the problem. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>conn DR<o:p></o:p></p><p class=MsoNormal> left=1.2.123.217<o:p></o:p></p><p class=MsoNormal> leftnexthop=1.2.123.218<o:p></o:p></p><p class=MsoNormal> leftsubnet=172.21.99.0/24<o:p></o:p></p><p class=MsoNormal> leftsourceip=172.21.99.100<o:p></o:p></p><p class=MsoNormal> leftid=@dr.local<o:p></o:p></p><p class=MsoNormal> # rsakey AQPLd3j2f<o:p></o:p></p><p class=MsoNormal> leftrsasigkey=0sAQPLd3j2…<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Greg Scott<o:p></o:p></p></div></body></html>