diff --git a/src/rfc2131.c b/src/rfc2131.c
index ec0194b..f360fa8 100644
--- a/src/rfc2131.c
+++ b/src/rfc2131.c
@@ -978,6 +978,7 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
 		  struct dhcp_opt *option;
 
 		  /* OK only dhcp-option-pxe options. */
+		  tmp->netid.next = NULL;
 		  tagif_netid = option_filter(netid, tmp->netid.net ? &tmp->netid : NULL, daemon->dhcp_opts, 2);
 		  boot = find_boot(tagif_netid);