Openswan IPSec tunnel fails when using compress=yes

Solution Verified - Updated -

Issue

When using the compress=yes option in ipsec.conf, the IPSec tunnel fails with the following message:

ERROR: netlink response for Add SA comp.2ca@x.x.x.x included errno 22: Invalid argument

Environment

  • Red Hat Enterprise Linux 5.6
  • openswan-2.6.21-5.el5_6.4.x86_64

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