add setup script for fastd vpn

static/fastd-setup.sh

+#!/bin/bash
+
+
+DEST="./ffhl"
+SECRET=$(fastd --generate-key | awk '/Secret/ {print $2 }')
+# generate a random address and hope its not already used
+IPADDRESS="10.130.$(( 16 + $RANDOM % 15)).$(( 1 + $RANDOM % 254))"
+
+mkdir -p $DEST
+
+cat - > $DEST/fastd.conf << EOF
+log to syslog level debug;
+interface "ffhl";
+secret "$SECRET";
+mode tap;
+secure handshakes yes;
+method "salsa2012+umac";
+mtu 1500;
+peer limit 1;
+
+on up "./fastd-up";
+
+include peers from "peers";
+EOF
+
+
+
+# setup remote peer
+mkdir -p $DEST/peers
+cat - > $DEST/peers/vpn_gw << EOF
+key "812e7282ebf33f5203cb120a820acf731482cae694b8c08ece3f81faec6cd725";
+remote "pablo.0x000.net" port 9999;
+EOF
+
+# ip setup script
+cat - > $DEST/fastd-up << EOF
+#!/bin/sh
+
+ip address add ${IPADDRESS}/16 dev \$INTERFACE
+ip link set \$INTERFACE up
+EOF
+
+chmod a+x $DEST/fastd-up
+
+echo "=========================================================="
+echo "!!!!! send this key to someone !!!!!"
+echo "run 'fastd --show-key -c $DEST/fastd.conf' to see it again"
+echo "you also want to move $DEST to /etc/fastd/"
+echo "   sudo mv $DEST to /etc/fastd/"
+echo
+fastd --show-key -c $DEST/fastd.conf