bind: manual fix for IPv6 server unreachable noise

Until we have a failsafe way of detecting no IPv6 internet
connectivity automatically, allow the users to set it
manually for now.

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>

net/bind/Makefile

@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=bind
 PKG_VERSION:=9.20.15
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 USERID:=bind=57:bind=57
 
 PKG_MAINTAINER:=Noah Meyerhans <frodo@morgul.net>

net/bind/files/bind/named.conf

@@ -7,6 +7,9 @@ options {
 
 	// This is used e.g. by isc-dhcp
 	allow-new-zones yes;
+
+	// Uncomment this if you don't have IPv6 connectivity
+	//query-source-v6 none;
 };
 
 // prime the server with knowledge of the root servers