test of lzo option in OpenVPN

[Adolf Belka <adolf.belka@ipfire.org>]

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Hi All,

As discussed in the conf call I did a test of the LZO option and the 
result was not what I had hoped for, at least with Network Manager - 
openvpn plugin.

Using my vm testbed, I created a client with LZO option enabled.

I made an opnvpn connection which was successful and worked.

Then I disabled LZO on the server but left the client as it was.

Remade the connection. The connection showed as CONNECTED in the openvpn 
WUI page but in my Arch Linux log for the network manager I got a 
periodic message of

nm-openvpn[1266]: Bad LZO decompression header byte: 42

Additionally trying to use the browser through the tunnel failed with 
the web sites timing out.

So at least with Network Manager Openvpn plugin turning LZO off on the 
server ,when the client has it specified, does not work the way we 
discussed.

I will do a further test with openvpn directly on the command line but 
if one openvpn client doesn't accept LZO being turned off on the server 
if it is enabled in the client this means we can't remove the LZO option 
and default it to disabled on the WUI page.

Regards,

Adolf.

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