IOSRAM_CHOSEN_PROP
if (prom_getprop(nodeid, IOSRAM_CHOSEN_PROP, (caddr_t)&tunnel) <= 0) {
if (prom_getprop(dnode, IOSRAM_CHOSEN_PROP, (caddr_t)&nodeid) <= 0) {
if (prom_getprop(nodeid, IOSRAM_CHOSEN_PROP, (caddr_t)&tunnel) <= 0) {