echo "disabling network of compute host [$COMPUTE_HOST] for 3 mins..."
cat > disable_network.sh << 'END_TXT'
#!/bin/bash -x
-dev=$(sudo ip a | awk '/ @COMPUTE_IP@\//{print $7}')
-[[ -n "$dev" ]] || dev=$(sudo ip a | awk '/ @COMPUTE_IP@\//{print $5}')
+dev=$(sudo ip a | awk '/ @COMPUTE_IP@\//{print $NF}')
sleep 1
sudo ip link set $dev down
echo "doctor set link down at" $(date "+%s.%N")