#define ENV_VAR_SDN_CONTROLLER_CALLHOME_PORT "SDN_CONTROLLER_CALLHOME_PORT"
#define ENV_VAR_SDN_CONTROLLER_USERNAME "SDN_CONTROLLER_USERNAME"
#define ENV_VAR_SDN_CONTROLLER_PASSWORD "SDN_CONTROLLER_PASSWORD"
#define ENV_VAR_SDN_CONTROLLER_CALLHOME_PORT "SDN_CONTROLLER_CALLHOME_PORT"
#define ENV_VAR_SDN_CONTROLLER_USERNAME "SDN_CONTROLLER_USERNAME"
#define ENV_VAR_SDN_CONTROLLER_PASSWORD "SDN_CONTROLLER_PASSWORD"