Public bug reported:

After upgrade racoon from 1:0.8.2+20140711-5 to 1:0.8.2+20140711-10build1 Apple 
iPhones, which use a racoon client cannot connect to the racoon VPN on the 
Ubuntu server. Following log entries outline the failure:
Sep 14 06:42:28 vpnserver racoon[1775]: ERROR: Repeated fragment index mismatch
Sep 14 06:42:28 vpnserver racoon[1775]: ERROR: Repeated last fragment index 
mismatch
Sep 14 06:42:32 vpnserver racoon[1775]: ERROR: Repeated fragment index mismatch
Sep 14 06:42:32 vpnserver racoon[1775]: ERROR: Repeated last fragment index 
mismatch
Sep 14 06:42:35 vpnserver racoon[1775]: ERROR: Repeated fragment index mismatch
Sep 14 06:42:35 vpnserver racoon[1775]: ERROR: Repeated last fragment index 
mismatch
Sep 14 06:42:35 vpnserver racoon[1775]: ERROR: Repeated fragment index mismatch
Sep 14 06:42:35 vpnserver racoon[1775]: ERROR: Repeated last fragment index 
mismatch
Sep 14 06:42:39 vpnserver racoon[1775]: ERROR: phase1 negotiation failed due to 
time up.                                                             

A brief check of the upstream activities shows, that maintainers
switched to panic mode because of CVE-2016-10396 and provided a rough
patch without support of the ipsec-tools project and without the ability
to perform sufficient regression tests.

As Debian as well as NetBSD maintainers already have expressed their
general concerns about this patch, there really seems to be a severe
issue.

Further evidences can be provided but as the topic is pretty complicated
detailed guidance is required.

** Affects: ipsec-tools (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1793028

Title:
  NetBSD CVE Patch Regression

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