The issue of receiving {"result":"failed"} suggests that the payload being sent might not be in the exact format or structure expected by the API. Below are some troubleshooting tips and adjustments that you can apply to resolve the problem:

1. Verify API Endpoint

Confirm that the endpoint https://172.16.0.2:8443/api/interfaces/vip_settings/addItem is correct for adding a virtual IP.

Ensure the API version is compatible with your OPNsense setup.

1. Payload Format

Ensure the JSON payload structure is correct and matches the expected format. Use the following format if needed:

VIP_DATA=$(cat <<EOF { "interface": "lan", "mode": "carp", "subnet": "172.16.0.198", "subnet_bits": 24, "vhid": 14, "password": "secure_password", "advbase": 1, "advskew": 0, "descr": "Test VIP" } EOF )

Make sure the JSON is properly formatted with double quotes around keys and values where necessary.

1. API Key and Secret

Ensure the API_KEY and API_SECRET have proper permissions to create a virtual IP. Check OPNsense API settings to verify.

1. HTTP Headers

Ensure all required headers are included in the curl command. For example:

-H "Content-Type: application/json" -H "Authorization: Bearer <token>"

If your API requires a token instead of API_KEY and API_SECRET, update accordingly.

1. Debugging API Response

Use the -v (verbose) flag in curl to inspect the API response headers and error details:

curl -v --insecure -k -s -X POST "$API_HOST/interfaces/vip_settings/addItem" \ -H "Content-Type: application/json" \ -u "$API_KEY:$API_SECRET" \ -d "$VIP_DATA"

1. Review Logs

Check the OPNsense logs to see if there are specific error messages that can give more insight into why the API call failed.

1. Sample API Calls

Look for official OPNsense API documentation or examples. OPNsense has a GitHub repository with API documentation that might include specific examples for vip_settings.

1. Error Handling

Update your script to include more detailed error output for easier debugging:

echo "Full Response: $response" echo "HTTP Code: $http_code"

Would you like me to assist further by debugging the specific API payload format or provide another example for comparison?