/usr/mipsisa64r6-linux-gnuabi64/include/netinet/ is in libc6-dev-mips64r6-cross 2.27-3ubuntu1cross1.
This file is owned by root:root, with mode 0o755.
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/usr/mipsisa64r6-linux-gnuabi64/include/netinet/ether.h
/usr/mipsisa64r6-linux-gnuabi64/include/netinet/icmp6.h
/usr/mipsisa64r6-linux-gnuabi64/include/netinet/if_ether.h
/usr/mipsisa64r6-linux-gnuabi64/include/netinet/if_fddi.h
/usr/mipsisa64r6-linux-gnuabi64/include/netinet/if_tr.h
/usr/mipsisa64r6-linux-gnuabi64/include/netinet/igmp.h
/usr/mipsisa64r6-linux-gnuabi64/include/netinet/in.h
/usr/mipsisa64r6-linux-gnuabi64/include/netinet/in_systm.h
/usr/mipsisa64r6-linux-gnuabi64/include/netinet/ip.h
/usr/mipsisa64r6-linux-gnuabi64/include/netinet/ip6.h
/usr/mipsisa64r6-linux-gnuabi64/include/netinet/ip_icmp.h
/usr/mipsisa64r6-linux-gnuabi64/include/netinet/tcp.h
/usr/mipsisa64r6-linux-gnuabi64/include/netinet/udp.h