1 esp tunnel from 3ffe::1 to 3ffe::2 spi 0xdeadbeef auth hmac-sha1 enc aes \
2 authkey 0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \
3 enckey 0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
4 esp tunnel from 3ffe::2 to 3ffe::1 spi 0xbeefdead auth hmac-sha1 enc aes \
5 authkey 0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \
6 enckey 0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee