OpenVPN Bad LZO decompression header byte: 69

Question

On Arch Linux I run OpenVPN 2.3.9 server and I get this error "Bad LZO decompression header byte: 69"

I run the client on a rooted Motorola XT1039 android lollipop 5.1 and I use official "OpenVPN Connect" android app to connect: I get this error Tun write error: write_some: invalid argument

client configuration: http://pastebin.com/kR3EGj1d

Server configuration http://pastebin.com/c9nhX6Lv

Solution

The problem is that your server has comp-lzo adaptive in the config, but the client does not have compression enabled at all. So the client is sending uncompressed packets, while the server is expecting a compression header. Add comp-lzo to your client config file (adaptive is the default mode for comp-lzo, so you can omit that).

Comments

[Xenioz]

Server log file verbosity level 9: pastebin.com/2jm7KRiU