Package: ntopng-data Version: 2.2+dfsg1-2 Hi,
Currently ntopng doesn't install properly on a multi-arch system (e.g. arm64/armhf). I believe that the fix for this is to add Multi-Arch: foreign to ntopng-data in debian/control. (If you want to read my tale of woe about this, see: https://lists.debian.org/debian-arm/2016/12/msg00033.html ) Thanks, Phil.