Quando inicio a conexão da vpn com o comando "ipsec auto --up vpn", ocorre o seguinte:
003 "/etc/ipsec.secrets" line 1: file starts with indentation (continuation notation)
104 "vpn" #1: STATE_MAIN_I1: INITIATE
106 "vpn" #1: STATE_MAIN_I2: SENT MI2, EXPECTING MR2
003 "vpn" #1: UNABLE TO LOCATE MY PRIVATE KEY FOR RSA SIGNATURE
224 "vpn" #1: STATE_MAIN_I2: AUTHENTICATION_FAILED

A chave é de 1024 bits. O q está errado?