esp tunnel from 3ffe::1 to 3ffe::2 spi 0xdeadbeef auth hmac-sha2-256 enc aesctr
	authkey 0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
	enckey 0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
esp tunnel from 3ffe::2 to 3ffe::1 spi 0xbeefdead auth hmac-sha2-256 enc aesctr
	authkey 0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
	enckey 0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee