diff --git a/aos/linux_code/configuration.cc b/aos/linux_code/configuration.cc
index 6c39a93..a8cc4ae 100644
--- a/aos/linux_code/configuration.cc
+++ b/aos/linux_code/configuration.cc
@@ -23,6 +23,20 @@
 // TODO(brians): Don't hard-code this.
 const char *const kLinuxNetInterface = "eth0";
 const in_addr *DoGetOwnIPAddress() {
+    static const char *kOverrideVariable = "FRC971_IP_OVERRIDE";
+    const char *override_ip = getenv(kOverrideVariable);
+    if (override_ip != NULL) {
+        LOG(INFO, "Override IP is %s\n", override_ip);
+        static in_addr r;
+        if (inet_aton(override_ip, &r) != 0) {
+            return &r;
+        } else {
+            LOG(WARNING, "error parsing %s value '%s'\n", kOverrideVariable, override_ip);
+        }
+    } else {
+        LOG(INFO, "Couldn't get environmental variable.\n");
+    }
+
   ifaddrs *addrs;
   if (getifaddrs(&addrs) != 0) {
     LOG(FATAL, "getifaddrs(%p) failed with %d: %s\n", &addrs,