Merge pull request #92 from dschaper/OutsideIP

IP detection update for gravity.sh

gravity.sh

@@ -8,7 +8,9 @@ if [[ -f $piholeIPfile ]];then
     rm $piholeIPfile
 else
     # Otherwise, the IP address can be taken directly from the machine, which will happen when the script is run by the user and not the installation script
-    piholeIP=$(ip -4 addr show | awk '{match($0,/[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/); ip = substr($0,RSTART,RLENGTH); print ip}' | sed '/^\s*$/d' | grep -v "127.0.0.1" | (head -n1))
+	IPv4dev=$(ip route get 8.8.8.8 | awk '{print $5}')
+	piholeIPCIDR=$(ip -o -f inet addr show dev $IPv4dev | awk '{print $4}')
+	piholeIP=${piholeIPCIDR%/*}   
 fi
 
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