From: Guus Sliepen <guus@tinc-vpn.org>
Date: Fri, 5 Jan 2007 04:49:02 +0000 (+0000)
Subject: Fix generic BSD tun device to write only the actual packet length.
X-Git-Tag: release-1.0.7~4
X-Git-Url: https://git.librecmc.org/?p=oweals%2Ftinc.git;a=commitdiff_plain;h=5214ece03009a916159c710cf436af1e92909f41

Fix generic BSD tun device to write only the actual packet length.
Due to a copy&paste bug, it tried to write a packet with the maximum size.
This was not a problem until the maximum size was increased to support VLANs.
---

diff --git a/src/bsd/device.c b/src/bsd/device.c
index 8649d89..419c38f 100644
--- a/src/bsd/device.c
+++ b/src/bsd/device.c
@@ -245,7 +245,7 @@ bool write_packet(vpn_packet_t *packet)
 
 		case DEVICE_TYPE_TUNIFHEAD: {
 			u_int32_t type;
-			struct iovec vector[2] = {{&type, sizeof(type)}, {packet->data + 14, MTU - 14}};
+			struct iovec vector[2] = {{&type, sizeof(type)}, {packet->data + 14, packet->len - 14}};
 			int af;
 			
 			af = (packet->data[12] << 8) + packet->data[13];