diff --git a/run/network.sh b/run/network.sh
index 1df4c84..63cfed2 100644
--- a/run/network.sh
+++ b/run/network.sh
@@ -112,8 +112,10 @@ configureNAT () {
   iptables -t nat -A PREROUTING -i "${VM_NET_DEV}" -p tcp  -j DNAT --to $VM_NET_IP
   iptables -t nat -A PREROUTING -i "${VM_NET_DEV}" -p udp  -j DNAT --to $VM_NET_IP
 
-  # Hack for guest VMs complaining about "bad udp checksums in 5 packets"
-  iptables -A POSTROUTING -t mangle -p udp --dport bootpc -j CHECKSUM --checksum-fill || true
+  if (( KERNEL > 4 )); then
+    # Hack for guest VMs complaining about "bad udp checksums in 5 packets"
+    iptables -A POSTROUTING -t mangle -p udp --dport bootpc -j CHECKSUM --checksum-fill || true
+  fi
 
   #Enable port forwarding flag
   [[ $(< /proc/sys/net/ipv4/ip_forward) -eq 0 ]] && sysctl -w net.ipv4.ip_forward=1
diff --git a/run/run.sh b/run/run.sh
index 8cc935f..1c7734d 100755
--- a/run/run.sh
+++ b/run/run.sh
@@ -3,8 +3,8 @@ set -eu
 
 # Docker environment variabeles
 
-: ${URL:=''}.                     # URL of the PAT file
-: ${DEBUG:=''}.               # Enable debug mode
+: ${URL:=''}                      # URL of the PAT file
+: ${DEBUG:=''}                # Enable debug mode
 : ${ALLOCATE:='Y'}       # Preallocate diskspace
 : ${CPU_CORES:='1'}     # Amount of CPU cores
 : ${DISK_SIZE:='16G'}    # Initial data disk size
@@ -13,6 +13,8 @@ set -eu
 echo "Starting Virtual DSM for Docker v${VERSION}..."
 
 STORAGE="/storage"
+KERNEL=$(uname -r | cut -b 1)
+
 [ ! -d "$STORAGE" ] && echo "Storage folder (${STORAGE}) not found!" && exit 69
 [ ! -f "/run/run.sh" ] && echo "Script must run inside Docker container!" && exit 60
 
@@ -67,4 +69,8 @@ set -m
 )
 set +m
 
-pidwait -F "${_QEMU_PID}" & wait $!
+if (( KERNEL > 4 )); then
+  pidwait -F "${_QEMU_PID}" & wait $!
+else
+  tail --pid "$(cat ${_QEMU_PID})" --follow /dev/null & wait $!
+fi