/usr/share/terminfo/x/x1700-lm is in ncurses-term 6.0+20160213-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/terminfo/x/../d/diablo1740-lm
/usr/share/terminfo/x/../d/diablo1740-lm