diff --git a/proto/config/devconfig.proto b/proto/config/devconfig.proto
index dcf2614..4e3628f 100644
--- a/proto/config/devconfig.proto
+++ b/proto/config/devconfig.proto
@@ -169,6 +169,14 @@ message EdgeDevConfig {
 
   // cluster configuration
   EdgeNodeCluster cluster = 43;
+  DhcpVendorExtensionsOverride dhcp_extensions_override = 44;
+}
+
+// DhcpVendorExtensionsOverride is used to override or add dhcp vendor extensions like f.e.
+// the NTP servers - currently no other options are supported, but DNS servers might be a
+// good candidate in the future
+message DhcpVendorExtensionsOverride {
+  bool ntpServerExclusively = 1; // use exclusively specified NTP servers
 }
 
 message ConfigRequest {
diff --git a/proto/info/info.proto b/proto/info/info.proto
index b41c706..5b001db 100644
--- a/proto/info/info.proto
+++ b/proto/info/info.proto
@@ -767,6 +767,7 @@ message DevicePort {
   // domainname - OBSOLETE - obsoleted by dns
   string domainname = 14;
   string ntpServer = 15;
+  repeated string extraNtpServers = 35;
   // dnsServers - OBSOLETE - obsoleted by dns
   repeated string dnsServers = 16;
   string dhcpRangeLow = 17;