Thanks Wookey. I have filed bug #848152 about ntopng-data needing Multi-Arch: foreign.
I guess we should apply a bit more effort to all this long-tail multi-arch breakage so that more things cross-build and cross-install.
I suspect that some sort of random-order package installation test might find some issues, if you let it run for long enough. I'm not going to try to do that over my rubbish network connection though! BTW my Gigabyte X-Gene board is still not fully working; I'm waiting for a bug fix to make ethernet speed auto-negotiation work. And now Applied Micro have been bought and plan to get rid of the processor division, so the whole product line might become abandonware. Can someone remind me why we think this ARM stuff is a good idea? Cheers, Phil.