[PATCH] set pkt_len when packet is received using L3 listening mode so that the ACK can be processed correctly

The packet length is not set correctly when an IPv4 L3 ACK is received from a
DHCP server.  This causes the packet to be rejected for having no
MESSAGE_TYPE option and the lease is not renewed at the T1 point (or any
subsequent retry).  Instead, the lease gets re-bound at the T2 point.

---
 gdhcp/client.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gdhcp/client.c b/gdhcp/client.c
index 82017692..c58c7be9 100644
--- a/gdhcp/client.c
+++ b/gdhcp/client.c
@@ -2316,6 +2316,7 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
 		} else {
 			re = dhcp_recv_l3_packet(&packet,
 						dhcp_client->listener_sockfd);
+			pkt_len = (uint16_t)(unsigned int)re;
 			xid = packet.xid;
 		}
 	} else if (dhcp_client->listen_mode == L_ARP) {
-- 
2.34.1


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