Summary
The remote host is missing updates announced in
advisory GLSA 200404-05.
Solution
ipsec-tools users should upgrade to version 0.2.5 or later:
# emerge sync
# emerge -pv '>=net-firewall/ipsec-tools-0.2.5'
# emerge '>=net-firewall/ipsec-tools-0.2.5'
http://www.securityspace.com/smysecure/catid.html?in=GLSA%20200404-05 http://bugs.gentoo.org/show_bug.cgi?id=47013
Insight
ipsec-tools contains a vulnerability that affects connections authenticated with X.509 certificates.