[libvirt-users] dropping capabilities in lxc containers

Hi there I’m not quite proficient with libvirt yet, and have been using it so far primarily to manage lxc containers I was hoping to find a means to configure the set of capabilities that guests should drop, but came across a few web pages suggesting these were set in stone in the code is this correct, or is there a means to tweak this set from the host via the xml config or a virsh command ? any hint / pointer to documentation in this respect would be most appreciated — Thierry