Merge pull request #19179 from FRRouting/mergify/bp/stable/10.0/pr-18592

bfdd: Set bfd.LocalDiag when transitioning to AdminDown (backport #18592)

Author: donaldsharp

bfdd/bfd.c

@@ -1256,6 +1256,7 @@ void bfd_set_shutdown(struct bfd_session *bs, bool shutdown)
 			return;
 
 		SET_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN);
+		bs->local_diag = BD_ADMIN_DOWN;
 
 		/* Handle data plane shutdown case. */
 		if (bs->bdc) {