The {up,down}.sh scripts hardcode the path to /sbin/resolvconf. This doesn't work with openresolv, where resolvconf is /usr/sbin/resolvconf. As there is no other implementation of resolvconf in Gentoo any more, the easiest fix is to change the paths in said scripts. Reproducible: Always
Closing this bug as invalid. I have a custom ebuild of openresolv-3.5.2 installed, where I changed the installation prefix to /usr in order to cope with the recent changes regarding the location of */libexec. The version of openresolv in the tree still installs to the / prefix.