//retiolum list-known-public-addresses: add online filter

1 files changed, 7 insertions, 1 deletions

diff --git a/retiolum/bin/list-known-public-addresses b/retiolum/bin/list-known-public-addresses
index d8073791..00d8d4b9 100755
--- a/retiolum/bin/list-known-public-addresses
+++ b/retiolum/bin/list-known-public-addresses
@@ -28,5 +28,11 @@ _filter_public() {
     # TODO drop private IPv6 addresses
   '
 }
+_filter_online() {
+  awk '
+    {print"nc -zw 2 "$2" 655 2>/dev/null && echo "$1" "$2" &"}
+    END {print"wait"}
+  ' | sh
+}
 
-_list_hostname_address | _lookup_address | _filter_public
+_list_hostname_address | _lookup_address | _filter_public | _filter_online