sys-kernel/aufs-sources version 3.11.3 (and .2) lacks of aufs filesystem, while 3.10.13 is ok I've just copied .config in new kernel and made a menuconfig in config CONFIG_AUFS_FS=y booted kernel doesn't have aufs in /proc/filesystem Reproducible: Always
How about .4? For me it is fine.
3.11.4 does work thanks