From b6b0e5da1385478db04f5def1cdb870dd628aceb Mon Sep 17 00:00:00 2001
From: Radoslaw Olko <radoslaw.olko@gmail.com>
Date: Wed, 16 Jan 2019 22:50:47 +0100
Subject: [PATCH] added lease time option to dhcpserver's DHCPOFFER

---
 extras/dhcpserver/dhcpserver.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/extras/dhcpserver/dhcpserver.c b/extras/dhcpserver/dhcpserver.c
index a9a6f93..428ec8e 100644
--- a/extras/dhcpserver/dhcpserver.c
+++ b/extras/dhcpserver/dhcpserver.c
@@ -254,6 +254,9 @@ static void handle_dhcp_discover(struct dhcp_msg *dhcpmsg)
         opt = add_dhcp_option_bytes(opt, DHCP_OPTION_DNS_SERVER, &state->dns, 4);
     }
 
+    uint32_t expiry = htonl(DHCPSERVER_LEASE_TIME);
+    opt = add_dhcp_option_bytes(opt, DHCP_OPTION_LEASE_TIME, &expiry, 4);
+
     opt = add_dhcp_option_bytes(opt, DHCP_OPTION_END, NULL, 0);
 
     struct netbuf *netbuf = netbuf_new();