/usr/mips64el-linux-gnuabi64/lib32/libnss_dns.so.2 is in libc6-mipsn32-mips64el-cross 2.23-0ubuntu3cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/mips64el-linux-gnuabi64/lib32/libnss_dns-2.23.so