--- /usr/portage/net-vpn/strongswan/strongswan-5.5.3.ebuild     2017-06-23 06:38:43.000000000 +0200
+++ /usr/local/portage/net-vpn/strongswan/strongswan-5.5.3.ebuild       2017-09-22 20:06:46.132346644 +0200
@@ -11,7 +11,7 @@
 LICENSE="GPL-2 RSA DES"
 SLOT="0"
 KEYWORDS="amd64 arm ppc ~ppc64 x86"
-IUSE="+caps curl +constraints debug dhcp eap farp gcrypt +gmp ldap mysql networkmanager +non-root +openssl selinux sqlite pam pkcs11"
+IUSE="+caps curl +constraints debug dhcp eap farp gcrypt +gmp ldap mysql networkmanager +non-root +openssl selinux sqlite systemd pam pkcs11"
 
 STRONGSWAN_PLUGINS_STD="led lookip systime-fix unity vici"
 STRONGSWAN_PLUGINS_OPT="blowfish ccm ctr gcm ha ipseckey ntru padlock rdrand unbound whitelist"
@@ -169,6 +169,7 @@
                $(use_enable pam xauth-pam) \
                $(use_enable pkcs11) \
                $(use_enable sqlite) \
+               $(use_enable systemd) \
                "$(systemd_with_unitdir)" \
                ${myconf}
 }