alpine-1.9x iproute2 does not replace Busybox ip command
Last tested on alpine-1.9.0_alpha16.
After installing iproute2, the symbolic link /bin/ip still exists. It looks like this should be deleted, so that /usr/sbin/ip can be used.
(from redmine: issue id 65, created on 2009-07-14, closed on 2009-07-30)