[Openswan Users] Where did routes go with Openswan 2.6.31?

Michael H. Warfield mhw at WittsEnd.com
Tue Mar 15 09:48:59 EDT 2011

On Tue, 2011-03-15 at 00:50 -0500, Greg Scott wrote: 
> Wait, guys, hang on!  That whole routing business happened back in 2006
> - 5, count 'em, 5 years ago!  I never suggested Openswan had any bugs in
> this area.  And for what it's worth, I didn't block ICMPs in that
> situation.  I put in that updown script because users in this forum
> suggested it was the best workaround.  I might still have the emails
> around here someplace.  It's entirely possible the ISP at the time -
> some company that went through Chapter 11 and was operating out of the
> Caribbean if I remember correctly - had the problem.  Whatever the
> cause, I just worked around it with the updown script to tweak the MTU
> and went on with life. 
> LOL - I have an IPSEC book around here someplace the forum moderators
> might be familiar with that suggests to look for MTU issues when weird
> problems come up.  :)

> Anyway, the only question I posed in this post is, that updown script I
> put in to tweak the MTU was a hack and I never liked it much anyway.  Am
> I on solid ground if I get rid of it for anything new?  I seem to run
> into my share of goofy problems over the years - how would I
> troubleshoot potential MTU issues?

Well, your primary MTU troubleshooting tools would be either tcpdump or
wireshark with "traceroute --mtu" or suitable alternatives, in my book.

> Thanks

> - Greg Scott

Michael H. Warfield (AI4NB) | (770) 985-6132 |  mhw at WittsEnd.com
   /\/\|=mhw=|\/\/          | (678) 463-0932 |  http://www.wittsend.com/mhw/
   NIC whois: MHW9          | An optimist believes we live in the best of all
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