Roadwarrior <b>carol</b> proposes to gateway <b>moon</b> the ESP cipher suite
<b>AES_CTR_256 / AES_XCBC_96</b> by defining <b>esp=aes256ctr-aesxcbc-curve25519</b> in ipsec.conf.
A ping from <b>carol</b> to <b>alice</b> successfully checks the established tunnel.