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 };