def fake_log(log_key):
    """Return a fake fail2ban log."""
    fake_log_dict = {
        "single_ban": (
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_one] Ban 111.111.111.111"
        ),
        "ipv6_ban": (
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_one] Ban 2607:f0d0:1002:51::4"
        ),
        "multi_ban": (
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_one] Ban 111.111.111.111\n"
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_one] Ban 222.222.222.222"
        ),
        "multi_jail": (
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_one] Ban 111.111.111.111\n"
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_two] Ban 222.222.222.222"
        ),
        "unban_all": (
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_one] Ban 111.111.111.111\n"
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_one] Unban 111.111.111.111\n"
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_one] Ban 222.222.222.222\n"
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_one] Unban 222.222.222.222"
        ),
        "unban_one": (
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_one] Ban 111.111.111.111\n"
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_one] Ban 222.222.222.222\n"
            "2017-01-01 12:23:35 fail2ban.actions [111]: "
            "NOTICE [jail_one] Unban 111.111.111.111"
        ),
    }
    return fake_log_dict[log_key]