restTemplate response is not coming after 15 min due to IPVS TCP 15 min timeout

Question

restTemplate response is not coming after 15 min of request due to IPVS TCP 15 min timeout but with feign client response is coming even if response is coming after 15 min.

what should we configure to work restTemplate call also. Below configuration is already done but not working.

public RestTemplate restTemplate(RestTemplateBuilder restTemplateBuilder) {
    HttpComponentsClientHttpRequestFactory httpRequestFactory = new HttpComponentsClientHttpRequestFactory();

    httpRequestFactory.setConnectTimeout(900000000);
    httpRequestFactory.setConnectionRequestTimeout(900000000);
    httpRequestFactory.setReadTimeout(900000000);

    RestTemplate restTemplate = restTemplateBuilder.build();
    restTemplate.setRequestFactory(httpRequestFactory);
    return restTemplate;