diff --git a/src/ethernet_interface.cpp b/src/ethernet_interface.cpp
index 52f68d1..1e63a48 100644
--- a/src/ethernet_interface.cpp
+++ b/src/ethernet_interface.cpp
@@ -1145,6 +1145,7 @@
     {
         auto value = manager.getDHCPConf()->dnsEnabled() ? "true"s : "false"s;
         stream << "UseDNS="s + value + "\n";
+        stream << "UseDomains="s + value + "\n";
 
         value = manager.getDHCPConf()->ntpEnabled() ? "true"s : "false"s;
         stream << "UseNTP="s + value + "\n";