1esp from 1.1.1.1 to 2.2.2.2 spi 0xdeadbeef auth hmac-sha1 enc aes \ 2 authkey 0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \ 3 enckey 0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee 4 5esp from 2.2.2.2 to 1.1.1.1 spi 0xbeefdead auth hmac-sha1 enc aes \ 6 authkey 0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \ 7 enckey 0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee 8