We are using Suitelet to send request to third party. However they have IP restriction. I whitelisted my ip address but still when I run SL, it still shows IP restriction. Looks like because NetSuite account IP address need to be whitelisted. Is there anyone who experienced this please?

I'd like to know a solution also. Maybe set up an intermediary gateway service, to receive requests from Suitelet to 3rd party? NetSuite declared that • "*The IP addresses of NetSuite services may change at any time without notice.* • NetSuite Customer Support will not provide a list of NetSuite IP addresses. • NetSuite Customer Support will not be able to assist you when your integration breaks due to a change in NetSuite IP addresses. • Using IP addresses to directly access NetSuite services can result in unpredictable service outages or significant performance degradation." from here: https://docs.oracle.com/en/cloud/saas/netsuite/ns-online-help/section_N251955.html#subsect_157062775551