Sadly #9front is not ready for an intermitent #internet in order to be usable without being online 24/7 in tons of services. You are expected to read all your email and #usenet newsgroups via IMAP/NNTP without reusing a caché. I understand the point of #9front is to be always networked sharing distinct devices on separate machines (one of them can handle storage, the other one auth and so on) but that approach today works better under a LAN. Also, even by reusing nntpfs' cache (with clone(1) ) and set up bind mount points that won't grant you a merged cache a la slrnpull under Unix *but* something akin switching between snapshots as files might be overwritten upon new pulling/pushing.