From 641ae4076f72deb6636e098314be45aa50f358db Mon Sep 17 00:00:00 2001 From: Erik Ekman Date: Sun, 24 Jun 2007 10:04:02 +0000 Subject: [PATCH] Add mtu info to manpage --- man/iodine.8 | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/man/iodine.8 b/man/iodine.8 index 69921c7..e31a998 100644 --- a/man/iodine.8 +++ b/man/iodine.8 @@ -179,6 +179,12 @@ The normal case is to route all traffic through the DNS tunnel. To do this, firs add a route to the nameserver you use with the default gateway as gateway. Then replace the default gateway with the servers IP address within the DNS tunnel, and configure the server to do NAT. +.TP +.B MTU issues: +Some relaying DNS servers enforce a 512 byte packet limit. All larger packets are +simply dropped. If you can ping through the tunnel but not login via SSH, this is +most likely the case. Set the MTU on the server to 220 to ensure that all packets +are less than 512 bytes. This will however greatly affect performance. .SH BUGS File bugs at http://dev.kryo.se/iodine/ .SH AUTHORS