a few scripts

keep_en0_alive.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+[ "$UID" == 0 ] || exec sudo $0
+
+TARGET='10.0.100.254'
+TIMEOUT='5'
+
+kext='/System/Library/Extensions/BCM5722D.kext'
+
+std_date() {
+    echo -n $(date +'%Y-%m-%d %H:%M:%S')
+}
+
+is_up() {
+    ping -q -t $TIMEOUT -o -r $TARGET > /dev/null
+}
+
+wait_for_up() {
+    ping -q -o -r $TARGET > /dev/null
+}
+
+restart_iface() {
+    echo "syncing"
+    sync
+    echo "unloading kext"
+    kextunload $kext
+    echo "loading kext"
+    kextload $kext
+}
+
+while wait_for_up; do
+    while is_up; do
+        sleep 1
+    done
+
+    echo "en0 down @ `std_date`"
+    restart_iface
+done