traceroute6 default, traceroute not installed

╭─tyler at deathstar in ~ using ‹ruby-2.1.2› 14-08-28 - 10:14:24
╰─○ . /etc/lsb-release; echo "$DISTRIB_ID $DISTRIB_RELEASE"; which traceroute; which traceroute6
Ubuntu 14.04
traceroute not found
/usr/bin/traceroute6
╭─tyler at deathstar in ~ using ‹ruby-2.1.2› 14-08-28 - 10:15:12
╰─○