start_emulator

#!/bin/sh

if [ -z "$1" ]
then
    echo "Usage $0 <id>"
    exit 1
fi

if [ -z "$ANDROID_HOME" ]
then
    echo "Set the ANDROID_HOME environment variable to the location of your Android SDK"
    exit 1
fi

ID="$1"
EMULATOR="emu$ID"
HEX=$(python -c "print('{0:02x}'.format($ID))")

export LD_LIBRARY_PATH=$ANDROID_HOME/tools/lib

# If you want more interfaces per emulator, add them here with unique names,
# and attach them to the emulator by copying the two "-net" lines below.
sudo ip tuntap add "$EMULATOR" mode tap

sleep 2

# If you want to actually see the emulator, and not just interact with it over
# something like ADB, remove the "nographic" flag here.
sudo -E emulator -avd $EMULATOR -qemu -m 512 -enable-kvm \
    -nographic \
    -net nic,vlan=1,macaddr=52:52:00:12:34:$HEX \
    -net user,vlan=1,hostname="$EMULATOR" \
    -net nic,vlan=2,macaddr=52:54:00:12:35:$HEX \
    -net tap,ifname=${EMULATOR},script=no,vlan=2

sudo ip tuntap del "$EMULATOR" mode tap