There are several versions of fping that support ipv6. fping3 and 2.4b2_to-ipv6 for example. Fedora needs either a version that supports both ipv4 and ipv6; or two separate packages.
fping-2.4b2_to-ipv6 was shipped with Fedora 16 and 15 (and earlier): >cat /etc/fedora-release Fedora release 16 (Verne) >rpm -q fping fping-2.4b2-11.fc15.x86_64 >rpm -ql fping |grep sbin /usr/sbin/fping /usr/sbin/fping6 fping-3 is in testing for Fedora 16 now, and will be backported to 15 as well: >rpm -q fping fping-3.0-1.fc16.x86_64 >rpm -ql fping | grep sbin /usr/sbin/fping /usr/sbin/fping6