[Openswan Users] IPSec L2tpv3 throughput low using Netkey kernel stack

Paul Wouters paul at xelerance.com
Tue May 17 14:27:59 EDT 2011

On Mon, 16 May 2011, Vasanth Ragavendran wrote:

> but when the Sec driver is configured as module into the kernel the module doesn;t get inserted
> gives segmentation fault and if the Sec driver is configured as non-module type the kernel doesn't
> bootsup at all!

David might be able to help with this. The ubsec driver is mostly used on linksys/asus machines,
perhaps yours is slightly different?

Note that slow throughput could also be caused by fragmentation as a result of the extra IPsec
header space, causing you to encrypt two packets for every one unencrypted packet. Try setting
your LAN MTU to 1400 and see if the problem remains?


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