diff --git a/bin/add-custom b/bin/add-custom
index c3d7574..74221c7 100755
--- a/bin/add-custom
+++ b/bin/add-custom
@@ -7,7 +7,7 @@ use Regexp::Common qw/net/;
 
 my $host = shift || die "No zonename provided";
 my $master = shift;
-$master ||= '198.251.79.234';
+$master ||= '198.251.79.234 2607:f1c0:86e:b66f:6b86:babb:c367:b0dc';
 
 die "Zonename must end in a dot"
     unless ($host =~ /^[a-zA-Z0-9\.\-\_]+\.$/);