# Weird Wrapper Log entries **URL:** \ **Category:** Ignition\ **Tags:** ignition81\ **Created:** [March 11, 2022, 8:33pm UTC](https://forum.inductiveautomation.com/t/weird-wrapper-log-entries/57129 "2022-03-11T20:33:47Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![peter](https://avatars.discourse-cdn.com/v4/letter/p/278dde/32.png) [@peter](https://forum.inductiveautomation.com/u/peter)\ **Post date:** [March 11, 2022, 8:33pm UTC](https://forum.inductiveautomation.com/t/weird-wrapper-log-entries/57129/1 "2022-03-11T20:33:47Z")
(This is on 8.1.15 under Ubuntu) I’m running in a VM which has two IP4 addresses 192.168.1.102 and 192.168.100.102 This VM is for testing purposes only and has a small Ignition perspective project that connects to a PLC at 192.168.100.82. The GW has OPC UA, Perspective, SQL Bridge and Symbol Factory modules installed. There is one OPC UA connected defined to the PLC, and one SQL database connection defined (to a DB on the same Ubuntu VM), but not being used in my test project I had a reason to look at the wrapper log and discovered that it was rapidly filling up with entries like this _every 4 seconds_: I agree that 231.1.1.1 should be unreachable, as I have not defined any connectivity for it. But why is the attempt being made in the first place, and why is it filling up my nice clean wrapper log??? ```auto INFO | jvm 1 | 2022/03/11 13:08:26 | E [c.i.i.g.m.MulticastScheduler] [20:08:26]: IOException thrown when using IP address 231.1.1.1 and send port 4445 INFO | jvm 1 | 2022/03/11 13:08:26 | java.io.IOException: Network is unreachable INFO | jvm 1 | 2022/03/11 13:08:26 | at java.base/java.net.PlainDatagramSocketImpl.send0(Native Method) INFO | jvm 1 | 2022/03/11 13:08:26 | at java.base/java.net.AbstractPlainDatagramSocketImpl.send(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:26 | at java.base/java.net.DatagramSocket.send(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:26 | at com.inductiveautomation.ignition.gateway.multicast.MulticastScheduler.run(MulticastScheduler.java:243) INFO | jvm 1 | 2022/03/11 13:08:26 | at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$TrackedTask.run(BasicExecutionEngine.java:582) INFO | jvm 1 | 2022/03/11 13:08:26 | at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:26 | at java.base/java.util.concurrent.FutureTask.runAndReset(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:26 | at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:26 | at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:26 | at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:26 | at java.base/java.lang.Thread.run(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:31 | E [c.i.i.g.m.MulticastScheduler] [20:08:31]: IOException thrown when using IP address 231.1.1.1 and send port 4445 INFO | jvm 1 | 2022/03/11 13:08:31 | java.io.IOException: Network is unreachable INFO | jvm 1 | 2022/03/11 13:08:31 | at java.base/java.net.PlainDatagramSocketImpl.send0(Native Method) INFO | jvm 1 | 2022/03/11 13:08:31 | at java.base/java.net.AbstractPlainDatagramSocketImpl.send(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:31 | at java.base/java.net.DatagramSocket.send(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:31 | at com.inductiveautomation.ignition.gateway.multicast.MulticastScheduler.run(MulticastScheduler.java:243) INFO | jvm 1 | 2022/03/11 13:08:31 | at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$TrackedTask.run(BasicExecutionEngine.java:582) INFO | jvm 1 | 2022/03/11 13:08:31 | at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:31 | at java.base/java.util.concurrent.FutureTask.runAndReset(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:31 | at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:31 | at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:31 | at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) INFO | jvm 1 | 2022/03/11 13:08:31 | at java.base/java.lang.Thread.run(Unknown Source) ``` ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [March 11, 2022, 8:45pm UTC](https://forum.inductiveautomation.com/t/weird-wrapper-log-entries/57129/2 "2022-03-11T20:45:12Z")
Ignition multicasts to announce itself on the network for launchers to find. You can turn it off (somewhere in the gateway settings, IIRC). ---
**Author:** ![peter](https://avatars.discourse-cdn.com/v4/letter/p/278dde/32.png) [@peter](https://forum.inductiveautomation.com/u/peter)\ **Post date:** [March 11, 2022, 8:46pm UTC](https://forum.inductiveautomation.com/t/weird-wrapper-log-entries/57129/3 "2022-03-11T20:46:09Z")
If it is announcing itself, why is it doing it on a non-existent sub-net? ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [March 11, 2022, 8:46pm UTC](https://forum.inductiveautomation.com/t/weird-wrapper-log-entries/57129/4 "2022-03-11T20:46:56Z")
It isn’t non-existent. That is an address range defined to be used for multicast on any subnet. ---
**Author:** ![peter](https://avatars.discourse-cdn.com/v4/letter/p/278dde/32.png) [@peter](https://forum.inductiveautomation.com/u/peter)\ **Post date:** [March 11, 2022, 8:47pm UTC](https://forum.inductiveautomation.com/t/weird-wrapper-log-entries/57129/5 "2022-03-11T20:47:30Z")
D’oh … I thought that it looked familiar ---
**Author:** ![peter](https://avatars.discourse-cdn.com/v4/letter/p/278dde/32.png) [@peter](https://forum.inductiveautomation.com/u/peter)\ **Post date:** [March 11, 2022, 8:50pm UTC](https://forum.inductiveautomation.com/t/weird-wrapper-log-entries/57129/6 "2022-03-11T20:50:46Z")
It’s an option called “Enable Multicast” under the GW Multicast Settings. Who would have guessed.