X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/firewall/blobdiff_plain/8bd7e0fe312a7b0c18f2d03eb41edd3a7ca9003c..2b5ca0033749741dbbe22eed9bc12b4f64199b0d:/functions.m4

diff --git a/functions.m4 b/functions.m4
index c8a08c4..765a94d 100644
--- a/functions.m4
+++ b/functions.m4
@@ -301,8 +301,11 @@ ntpclient () {
   ntpchain=$1; shift
 
   clearchain ntp-servers
-  for ntp; do run iptables -A ntp-servers -j ACCEPT -s $ntp; done
-  run iptables -A $ntpchain -j ntp-servers \
+  for ntp; do
+    case $ntp in *:*) ipt=ip6tables ;; *) ipt=iptables ;; esac
+    run $ipt -A ntp-servers -j ACCEPT -s $ntp;
+  done
+  run ip46tables -A $ntpchain -j ntp-servers \
 	  -p udp --source-port 123 --destination-port 123
 }