Do not place libdir location in .conf files
/etc/kea/kea-ctrl-agent.conf and /etc/kea/kea-dhcp4.conf carry a reference to a library directory in their comments. This is problematic on multilib systems where there can be multiple library locations (e.g. 32 and 64 bit), but only one set of config files. Yocto project carries a patch to remove libdir references: https://git.yoctoproject.org/poky/tree/meta/recipes-connectivity/kea/files/fix-multilib-conflict.patch
and we'd like to submit it as a merge request here.