/usr/mipsisa64r6-linux-gnuabi64/bin/strip is in binutils-mipsisa64r6-linux-gnuabi64 2.30-15ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/mipsisa64r6-linux-gnuabi64/bin/../../bin/mipsisa64r6-linux-gnuabi64-strip