I've noticed these thanks to question on the list:
https://www.redhat.com/archives/libvir-list/2020-December/msg00699.html
where I suggested to use namespace inheritance.
Michal Prívozník (4):
schema: Allow lxc:namepsace children to appear individually
lxc: Allow NULL argument to lxcDomainDefNamespaceFree()
lxc: Rework lxcDomainDefNamespaceParse()
lxd_domain: Require that VIR_LXC_DOMAIN_NAMESPACE_SOURCE_NONE is zero
docs/schemas/domaincommon.rng | 66 +++++++++++++++++++----------------
src/lxc/lxc_domain.c | 44 +++++++++++++----------
src/lxc/lxc_domain.h | 2 +-
3 files changed, 63 insertions(+), 49 deletions(-)
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2.26.2