From ed9d4e7de1281c4e0aa38621fba81dbb5812c0df Mon Sep 17 00:00:00 2001
From: Erik Ekman <yarrick@kryo.se>
Date: Tue, 6 Jun 2006 16:00:27 +0000
Subject: [PATCH] Send ping on receive data

---
 dnstun.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dnstun.c b/dnstun.c
index c1f97b2..260c5b2 100644
--- a/dnstun.c
+++ b/dnstun.c
@@ -94,6 +94,9 @@ tunnel(int tun_fd, int dns_fd)
 #endif
 					
 					write_tun(tun_fd, frame, read + 4);
+					if (!dns_sending()) {
+						dns_ping(dns_fd);
+					}
 				}
 			} 
 		}