fixed netconsole getting junk from other robots
diff --git a/aos/linux_code/init.cc b/aos/linux_code/init.cc
index 240a9d3..d05df77 100644
--- a/aos/linux_code/init.cc
+++ b/aos/linux_code/init.cc
@@ -43,9 +43,7 @@
 void InitStart() {
   // Allow locking as much as we want into RAM.
   SetSoftRLimit(RLIMIT_MEMLOCK, RLIM_INFINITY, false);
-
-  // Do create core files of unlimited size.
-  SetSoftRLimit(RLIMIT_CORE, RLIM_INFINITY, true);
+  WriteCoreDumps();
 }
 
 int LockAllMemory() {
@@ -112,4 +110,9 @@
   }
 }
 
+void WriteCoreDumps() {
+  // Do create core files of unlimited size.
+  SetSoftRLimit(RLIMIT_CORE, RLIM_INFINITY, true);
+}
+
 }  // namespace aos