### Environment
```
mkdir -p workspace
pushd workspace
repo init -u https://android.googlesource.com/platform/manifest -b refs/tags/android-security-11.0.0_r53
repo sync -cj4
popd 
```

**[Build - external_dnsmasq]**
```
tar -xf external_dnsmasq.tar.gz -C workspace
pushd workspace
source build/envsetup.sh
lunch hikey960_tv-userdebug
pushd external/iptables
mm
popd
popd
```