[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer started
Jun 18, 2026 7:16:25 AM com.google.common.util.concurrent.AbstractFuture executeListener
SEVERE: RuntimeException while executing runnable CallbackListener{org.opendaylight.netconf.client.mdsal.spi.KeepaliveSalFacade$KeepaliveTask@2e6296dc} with executor MoreExecutors.directExecutor()
java.lang.IllegalStateException: cannot be started once stopped
	at io.netty.util.HashedWheelTimer.start(HashedWheelTimer.java:363)
	at io.netty.util.HashedWheelTimer.newTimeout(HashedWheelTimer.java:445)
	at org.opendaylight.netconf.common.impl.NettyNetconfTimer.newTimeout(NettyNetconfTimer.java:66)
	at org.opendaylight.netconf.common.di.DefaultNetconfTimer.newTimeout(DefaultNetconfTimer.java:40)
	at org.opendaylight.netconf.client.mdsal.spi.KeepaliveSalFacadeResponseWaitingTest$DefaultNetconfTimerWrapper.newTimeout(KeepaliveSalFacadeResponseWaitingTest.java:347)
	at org.opendaylight.netconf.client.mdsal.spi.KeepaliveSalFacade$KeepaliveTask.reschedule(KeepaliveSalFacade.java:365)
	at org.opendaylight.netconf.client.mdsal.spi.KeepaliveSalFacade$KeepaliveTask.reschedule(KeepaliveSalFacade.java:358)
	at org.opendaylight.netconf.client.mdsal.spi.KeepaliveSalFacade$KeepaliveTask.onSuccess(KeepaliveSalFacade.java:331)
	at org.opendaylight.netconf.client.mdsal.spi.KeepaliveSalFacade$KeepaliveTask.onSuccess(KeepaliveSalFacade.java:222)
	at com.google.common.util.concurrent.Futures$CallbackListener.run(Futures.java:1132)
	at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:30)
	at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:1004)
	at com.google.common.util.concurrent.AbstractFuture.addListener(AbstractFuture.java:469)
	at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.addListener(AbstractFuture.java:119)
	at com.google.common.util.concurrent.Futures.addCallback(Futures.java:1098)
	at org.opendaylight.netconf.client.mdsal.spi.KeepaliveSalFacade$KeepaliveTask.sendKeepalive(KeepaliveSalFacade.java:313)
	at org.opendaylight.netconf.client.mdsal.spi.KeepaliveSalFacade$KeepaliveTask.run(KeepaliveSalFacade.java:261)
	at io.netty.util.HashedWheelTimer$HashedWheelTimeout.run(HashedWheelTimer.java:717)
	at io.netty.util.concurrent.ImmediateExecutor.execute(ImmediateExecutor.java:34)
	at io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:705)
	at io.netty.util.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:791)
	at io.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:501)
	at java.base/java.lang.VirtualThread.run(VirtualThread.java:329)

[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer stopped
[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer started
[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer stopped
[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer started
[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer stopped
[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer started
[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer stopped
[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer started
[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer stopped
[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer started
[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer stopped