From ae2bd6ea47158d549d85cdb37b0aee971ca42bb7 Mon Sep 17 00:00:00 2001
From: Julian Kranz <julian@juliankranz.de>
Date: Sat, 31 Dec 2011 16:36:32 +0100
Subject: [PATCH] Iodine: Added minimal MTU for IPv6

---
 src/client.c | 7 +++++++
 src/iodine.c | 7 +++++--
 src/tun.c    | 2 +-
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/client.c b/src/client.c
index 9f5dfe7..a361b38 100644
--- a/src/client.c
+++ b/src/client.c
@@ -1504,6 +1504,7 @@ handshake_login(int dns_fd, int seed)
 
 	login_calculate(login, 16, password, seed);
 	
+
 	for (i=0; running && i<5 ;i++) {
 
 		send_login(dns_fd, login, 16);
@@ -1519,6 +1520,12 @@ handshake_login(int dns_fd, int seed)
 				} else if (sscanf(in, "%64[^-]-%64[^-]-%d-%d", 
 					server, client, &mtu, &netmask) == 4) {
 					
+					/**
+					 * Todo: Correct?
+					 */
+					if(mtu < 1280)
+						mtu = 1280;
+
 					server[64] = 0;
 					client[64] = 0;
 					if (tun_setip(client, server, netmask) == 0 && 
diff --git a/src/iodine.c b/src/iodine.c
index 2872cd9..3ea9f50 100644
--- a/src/iodine.c
+++ b/src/iodine.c
@@ -138,7 +138,8 @@ main(int argc, char **argv)
 	int hostname_maxlen;
 	int rtable = 0;
 
-	printf("***MODIFIED***");
+	printf("***MODIFIED***\n");
+	fflush(stdout);
 
 	nameserv_addr = NULL;
 	topdomain = NULL;
@@ -327,10 +328,12 @@ main(int argc, char **argv)
 		retval = 1;
 		goto cleanup1;
 	}
+
 	if ((dns_fd = open_dns(0, INADDR_ANY)) == -1) {
 		retval = 1;
 		goto cleanup2;
 	}
+
 #ifdef OPENBSD
 	if (rtable > 0)
 		socket_setrtable(dns_fd, rtable);
@@ -346,7 +349,7 @@ main(int argc, char **argv)
 		retval = 1;
 		goto cleanup2;
 	}
-	
+
 	if (client_get_conn() == CONN_RAW_UDP) {
 		fprintf(stderr, "Sending raw traffic directly to %s\n", client_get_raw_addr());
 	}
diff --git a/src/tun.c b/src/tun.c
index 504451f..3e746ae 100644
--- a/src/tun.c
+++ b/src/tun.c
@@ -472,7 +472,7 @@ tun_setip(const char *ip, const char *other_ip, int netbits)
 			ip,
 #endif
 			inet_ntoa(net));
-	
+
 	fprintf(stderr, "Setting IP of %s to %s\n", if_name, ip);
 #ifndef LINUX
 	r = system(cmdline);