Here is a proposed patch:
diff -Naur netcfg-master/dhcp.c netcfg-master-updated/dhcp.c
--- netcfg-master/dhcp.c 2024-05-01 11:14:26.209026580 +0100
+++ netcfg-master-updated/dhcp.c 2024-05-01 11:15:11.888387848 +0100
@@ -41,6 +41,7 @@
"domain",
"hostname",
"dns",
+ "search",
"ntpsrv", /* extra */
NULL };

