android_device_mediatek_sepolicy/non_plat/netd.te

allow netd mtkimsmddomain:fd use;
allow netd mtkimsmddomain:{ tcp_socket udp_socket} { read write getopt setopt };

# Acquire advisory lock on /system/etc/xtables.lock. If this file doesn't
# exist, suppress the denial.
dontaudit netd system_file:dir write;