diff -urN e-smith-base-5.8.1.old/root/etc/e-smith/templates/etc/dhcpd.conf/25DomainNameServers e-smith-base-5.8.1/root/etc/e-smith/templates/etc/dhcpd.conf/25DomainNameServers
--- e-smith-base-5.8.1.old/root/etc/e-smith/templates/etc/dhcpd.conf/25DomainNameServers	2021-06-06 21:30:37.000000000 +0100
+++ e-smith-base-5.8.1/root/etc/e-smith/templates/etc/dhcpd.conf/25DomainNameServers	2022-12-29 10:02:33.027225656 +0000
@@ -2,9 +2,9 @@
     my @dnsserv;
     my $dnscustom = $DB->get_prop('dhcpd', 'dnscustom') || 'disabled';
     if ( $dnscustom eq 'enabled') {
-    	push @dnsserv,$DB->get_prop('dhcpd', 'dns1server') if $DB->get_prop('dhcpd', 'dns1server');
-    	push @dnsserv,$DB->get_prop('dhcpd', 'dns2server') if $DB->get_prop('dhcpd', 'dns2server');
-    	push @dnsserv,$DB->get_prop('dhcpd', 'dns3server') if $DB->get_prop('dhcpd', 'dns3server');
+    	push @dnsserv,$DB->get_prop('dhcpd', 'dns1server') if $DB->get_prop('dhcpd', 'dns1server') && $DB->get_prop('dhcpd', 'dns1server') ne "";
+    	push @dnsserv,$DB->get_prop('dhcpd', 'dns2server') if $DB->get_prop('dhcpd', 'dns2server') && $DB->get_prop('dhcpd', 'dns2server') ne "";
+    	push @dnsserv,$DB->get_prop('dhcpd', 'dns3server') if $DB->get_prop('dhcpd', 'dns3server') && $DB->get_prop('dhcpd', 'dns3server') ne "";
 	}
     # force our own dhcp server unless there is already 2 or more
     push @dnsserv,$LocalIP unless ( scalar(@dnsserv) >=2) ;
@@ -14,3 +14,4 @@
 
     $OUT = "    option domain-name-servers  ". join(",", @dnsserv) .";";
 }
+