1 files changed, 31 insertions, 0 deletions
diff --git a/run.sh b/run.sh
new file mode 100644
index 0000000..a758f62
--- /dev/null
+++ b/run.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# Exit on error
+set -e
+
+HOSTNAME="mDns"
+INTERFACE="eth0"
+VLANS="20 100"
+
+MTU=$(ip link show "$INTERFACE" | awk '{print $5}')
+
+for VLAN in $VLANS; do
+    # INTERFACE PROVISION
+    IFNAME="${INTERFACE}.${VLAN}"
+    [ ! -d "/sys/class/net/${IFNAME}" ] && {
+        echo "create interface ${IFNAME}"
+        ip link add link "$INTERFACE" name "$IFNAME" mtu "$MTU" type vlan id "$VLAN"
+    }
+    echo "bring up ${IFNAME} interface"
+    ip link set "${IFNAME}" up
+
+    # DHCP
+    [ -f "/var/run/udhcpc.${IFNAME}.pid" ] && {
+        kill "$(cat "/var/run/udhcpc.$IFNAME.pid")" || true
+        rm "/var/run/udhcpc.$IFNAME.pid"
+    }
+    echo "starting dhcp client on ${IFNAME}"
+    udhcpc -b -i "$IFNAME" -x hostname:"$HOSTNAME" -p "/var/run/udhcpc.${IFNAME}.pid"
+done
+
+exec "$@"