NPE while posting netcfg after deactivating Segment Routing App

while posting netconfiguration, I am seeing null pointer exception in the logs.
LOG:
2017-06-19 05:55:58,617 | WARN | spatch-topology0 | ListenerRegistry | 125 - org.onosproject.onos-api - 1.10.1.SNAPSHOT | Exception encountered while processing event HostEvent{time=2017-06-19T05:55:58.585, type=HOST_ADDED, subject=DefaultHost{id=00:00:00:00:00:01/None, mac=00:00:00:00:00:01, vlan=None, location=of:0000000000000001/1, ipAddresses=[10.0.1.1], annotations=

, configured=true}, prevSubject=null}
java.lang.NullPointerException
at org.onosproject.segmentrouting.SegmentRoutingManager$InternalHostListener.event(SegmentRoutingManager.java:1212)[173:org.onosproject.onos-apps-segmentrouting:1.10.1.SNAPSHOT]
at org.onosproject.segmentrouting.SegmentRoutingManager$InternalHostListener.event(SegmentRoutingManager.java:1207)[173:org.onosproject.onos-apps-segmentrouting:1.10.1.SNAPSHOT]
at org.onosproject.event.ListenerRegistry.process(ListenerRegistry.java:66)[125:org.onosproject.onos-api:1.10.1.SNAPSHOT]
at org.onosproject.event.impl.CoreEventDispatcher$DispatchLoop.process(CoreEventDispatcher.java:204)[127:org.onosproject.onos-core-net:1.10.1.SNAPSHOT]
at org.onosproject.event.impl.CoreEventDispatcher$DispatchLoop.run(CoreEventDispatcher.java:187)[127:org.onosproject.onos-core-net:1.10.1.SNAPSHOT]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[:1.8.0_101]
at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_101]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_101]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_101]
at java.lang.Thread.run(Thread.java:745)[:1.8.0_101]

Steps to reproduce:
(1) Activate segment routing application.
(2) Activate netcfg host provider application.
(3) Deactivate the segment routing application.
(4) Post a network configuration from rest API(I used 2x2.json for this testing)
(5) In logs, you will be able to see the null pointer exception.