diff --git a/conn.sh b/conn.sh
index e1832a2..060b109 100755
--- a/conn.sh
+++ b/conn.sh
@@ -86,7 +86,12 @@ function set_argvars {
 
 function validate {
   for arg in $@; do
-    if ip route show " $arg" 2&> /dev/null;then
+    if [[ ! "$arg" =~ : ]];then
+      arg=" $arg" # fixes issue with leading space on ipv6 adresses
+    else
+      only="-6" # enable ipv6, this needs a more complex function to avoid treating every argument as v6
+    fi
+    if ip route show "$arg" 2&> /dev/null;then
       hosts="$hosts $arg"
     elif nslookup "$arg" > /dev/null;then
       hosts="$hosts $arg"