Roadwarrior <b>carol</b> proposes to gateway <b>moon</b> the ESP cipher suite
<b>aes128-sha256_96-curve25519</b> which uses 96 bit instead of the standard 128 bit
truncation, allowing compatibility with Linux kernels older than 2.6.33.
<p/>
A ping from <b>carol</b> to <b>alice</b> successfully checks the established tunnel.