Nope
As it is wasted enough time of trying/debugging systemd-networkd and it has not converted me into a fan of it. The other network tools for archlinux are even worse 3.0.1 - udev / netctl / dhcpcd in archlinux unpriviliged container
raised awareness with the systemd disto’s maintainer anyway. perhaps he will sort it out. Will see what happens when systemd 239 hits the road.
Archlinux, whilst seemingly interesting in many aspects, holds no attraction for me for elaborate/expanded networking inside an unpriviliged container, and neither systemd-networkd in general.
Trying now Gentoo with netifrc which thus far looks like smooth going about netwroking. That it is of course until hitting a snag there…