--- a/debian/patches/80_allow_missing_ntver_in_cldap_ping.patch	
+++ a/debian/patches/80_allow_missing_ntver_in_cldap_ping.patch	
@@ -1,0 +1,13 @@ 
+--- a/source4/dsdb/samdb/ldb_modules/netlogon.c.orig
++++ b/source4/dsdb/samdb/ldb_modules/netlogon.c
+@@ -449,10 +449,6 @@ NTSTATUS parse_netlogon_request(struct l
+ 		*domain = lpcfg_dnsdomain(lp_ctx);
+ 	}
+ 
+-	if (*version == -1) {
+-		goto failed;
+-	}
+-
+ 	return NT_STATUS_OK;
+ 
+ failed:
--- a/debian/patches/series	
+++ a/debian/patches/series	
@@ -10000,0 +10000,1 @@ 
+80_allow_missing_ntver_in_cldap_ping.patch