* 'lsfd--tun-netns' of https://github.com/masatake/util-linux:
lsfd: add TUN.DEVNETNS column
tests: (lsfd::mkfds-cdev-tun,refactor) make the case extensible
lsfd: (doc) fix English in SOCK.NETNS description
lsfd: (cleanup) add missing "break" in a case statement
lsfd: (cleanup) return 0 instead of false
lsfd: (refactor) introduce tundata struct