to avoid the check_ping error `CRITICAL - You need more args!!!', do:



--- nagios-plugins-1.4.15.ebuild.org    2012-02-07 20:31:04.919360103 +0100
+++ nagios-plugins-1.4.15.ebuild        2012-02-07 21:52:38.972631632 +0100
@@ -78,6 +78,7 @@
                $(use_with ipv6) \
                $(use_with ldap) \
                ${conf} \
+               --with-ping-command="/bin/ping -n -U -w %d -c %d %s" \
                --host=${CHOST} \
                --prefix=/usr \
                --libexecdir=/usr/$(get_libdir)/nagios/plugins \