The curl command can be used to simulate URL requests from different interfaces or IP addresses configured on the server:
curl --interface xxx.xx.xx.xx <url>
curl --interface xxx.xx.xx.yy <url>
curl --interface xxx.xx.xx.zz <url>
Can the url_response probe be configured to simulate this same type of behavior?
As of url_response probe version 5.01, there is no functionality to force the probe to use a specific NIC or IP address when there are multiples available on the server. The probe will only use the interface that the robot is bound to.