[main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer started [odl-netconf-client-0] WARN org.opendaylight.netconf.transport.ssh.TransportClientSession - exceptionCaught(TransportClientSession[username@/127.0.0.1:42069])[state=Opened] SshException: Unable to negotiate key exchange for kex algorithms (client: diffie-hellman-group1-sha1,ext-info-c / server: sntrup761x25519-sha512,sntrup761x25519-sha512@openssh.com,mlkem768x25519-sha256,mlkem1024nistp384-sha384,mlkem768nistp256-sha256,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,diffie-hellman-group18-sha512,diffie-hellman-group17-sha512,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,ext-info-s) [server-3] WARN org.opendaylight.netconf.transport.ssh.TransportServerSession - exceptionCaught(TransportServerSession[null@/127.0.0.1:48284])[state=Opened] SshException: Unable to negotiate key exchange for kex algorithms (client: diffie-hellman-group1-sha1,ext-info-c / server: sntrup761x25519-sha512,sntrup761x25519-sha512@openssh.com,mlkem768x25519-sha256,mlkem1024nistp384-sha384,mlkem768nistp256-sha256,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,diffie-hellman-group18-sha512,diffie-hellman-group17-sha512,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,ext-info-s) [odl-netconf-client-0] WARN org.opendaylight.netconf.transport.ssh.SSHTransportStack - Session 1 encountered an error org.opendaylight.netconf.shaded.sshd.common.SshException: Unable to negotiate key exchange for kex algorithms (client: diffie-hellman-group1-sha1,ext-info-c / server: sntrup761x25519-sha512,sntrup761x25519-sha512@openssh.com,mlkem768x25519-sha256,mlkem1024nistp384-sha384,mlkem768nistp256-sha256,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,diffie-hellman-group18-sha512,diffie-hellman-group17-sha512,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,ext-info-s) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.negotiate(AbstractSession.java:2275) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.performKexNegotiation(AbstractSession.java:923) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.lambda$doKexNegotiation$3(AbstractSession.java:912) at org.opendaylight.netconf.shaded.sshd.common.future.AbstractSshFuture.lambda$notifyListener$3(AbstractSshFuture.java:178) at org.opendaylight.netconf.shaded.sshd.common.util.threads.ThreadUtils.runAsInternal(ThreadUtils.java:64) at org.opendaylight.netconf.shaded.sshd.common.future.AbstractSshFuture.notifyListener(AbstractSshFuture.java:177) at org.opendaylight.netconf.shaded.sshd.common.future.DefaultSshFuture.addListener(DefaultSshFuture.java:214) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.doKexNegotiation(AbstractSession.java:909) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.handleKexInit(AbstractSession.java:868) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.doHandleMessage(AbstractSession.java:597) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.lambda$handleMessage$0(AbstractSession.java:546) at org.opendaylight.netconf.shaded.sshd.common.util.threads.ThreadUtils.runAsInternal(ThreadUtils.java:68) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.handleMessage(AbstractSession.java:545) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.decode(AbstractSession.java:1729) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.messageReceived(AbstractSession.java:506) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:64) at org.opendaylight.netconf.shaded.sshd.netty.NettyIoSession.channelRead(NettyIoSession.java:302) at org.opendaylight.netconf.shaded.sshd.netty.NettyIoSession$Adapter.channelReadComplete(NettyIoSession.java:409) at io.netty.channel.AbstractChannelHandlerContext.fireChannelReadComplete(AbstractChannelHandlerContext.java:387) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelReadComplete(DefaultChannelPipeline.java:1434) at io.netty.channel.DefaultChannelPipeline.fireChannelReadComplete(DefaultChannelPipeline.java:932) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:172) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.handle(AbstractNioChannel.java:445) at io.netty.channel.nio.NioIoHandler$DefaultNioRegistration.handle(NioIoHandler.java:381) at io.netty.channel.nio.NioIoHandler.processSelectedKey(NioIoHandler.java:575) at io.netty.channel.nio.NioIoHandler.processSelectedKeysOptimized(NioIoHandler.java:550) at io.netty.channel.nio.NioIoHandler.processSelectedKeys(NioIoHandler.java:491) at io.netty.channel.nio.NioIoHandler.run(NioIoHandler.java:468) at io.netty.channel.SingleThreadIoEventLoop.runIo(SingleThreadIoEventLoop.java:206) at io.netty.channel.SingleThreadIoEventLoop.run(SingleThreadIoEventLoop.java:177) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:1073) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at java.base/java.lang.Thread.run(Thread.java:1583) [server-3] WARN org.opendaylight.netconf.transport.ssh.SSHTransportStack - Session 1 encountered an error org.opendaylight.netconf.shaded.sshd.common.SshException: Unable to negotiate key exchange for kex algorithms (client: diffie-hellman-group1-sha1,ext-info-c / server: sntrup761x25519-sha512,sntrup761x25519-sha512@openssh.com,mlkem768x25519-sha256,mlkem1024nistp384-sha384,mlkem768nistp256-sha256,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,diffie-hellman-group18-sha512,diffie-hellman-group17-sha512,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,ext-info-s) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.negotiate(AbstractSession.java:2275) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.performKexNegotiation(AbstractSession.java:923) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.lambda$doKexNegotiation$3(AbstractSession.java:912) at org.opendaylight.netconf.shaded.sshd.common.future.AbstractSshFuture.lambda$notifyListener$3(AbstractSshFuture.java:178) at org.opendaylight.netconf.shaded.sshd.common.util.threads.ThreadUtils.runAsInternal(ThreadUtils.java:64) at org.opendaylight.netconf.shaded.sshd.common.future.AbstractSshFuture.notifyListener(AbstractSshFuture.java:177) at org.opendaylight.netconf.shaded.sshd.common.future.DefaultSshFuture.addListener(DefaultSshFuture.java:214) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.doKexNegotiation(AbstractSession.java:909) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.handleKexInit(AbstractSession.java:868) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.doHandleMessage(AbstractSession.java:597) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.lambda$handleMessage$0(AbstractSession.java:546) at org.opendaylight.netconf.shaded.sshd.common.util.threads.ThreadUtils.runAsInternal(ThreadUtils.java:68) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.handleMessage(AbstractSession.java:545) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.decode(AbstractSession.java:1729) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.messageReceived(AbstractSession.java:506) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:64) at org.opendaylight.netconf.shaded.sshd.netty.NettyIoSession.channelRead(NettyIoSession.java:302) at org.opendaylight.netconf.shaded.sshd.netty.NettyIoSession$Adapter.channelReadComplete(NettyIoSession.java:409) at io.netty.channel.AbstractChannelHandlerContext.fireChannelReadComplete(AbstractChannelHandlerContext.java:387) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelReadComplete(DefaultChannelPipeline.java:1434) at io.netty.channel.DefaultChannelPipeline.fireChannelReadComplete(DefaultChannelPipeline.java:932) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:172) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.handle(AbstractNioChannel.java:445) at io.netty.channel.nio.NioIoHandler$DefaultNioRegistration.handle(NioIoHandler.java:381) at io.netty.channel.nio.NioIoHandler.processSelectedKey(NioIoHandler.java:575) at io.netty.channel.nio.NioIoHandler.processSelectedKeysOptimized(NioIoHandler.java:550) at io.netty.channel.nio.NioIoHandler.processSelectedKeys(NioIoHandler.java:491) at io.netty.channel.nio.NioIoHandler.run(NioIoHandler.java:468) at io.netty.channel.SingleThreadIoEventLoop.runIo(SingleThreadIoEventLoop.java:206) at io.netty.channel.SingleThreadIoEventLoop.run(SingleThreadIoEventLoop.java:177) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:1073) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at java.base/java.lang.Thread.run(Thread.java:1583) [server-3] INFO org.opendaylight.netconf.transport.ssh.TransportServerSession - Disconnecting(TransportServerSession[null@/127.0.0.1:48284]): SSH2_DISCONNECT_KEY_EXCHANGE_FAILED - Unable to negotiate key exchange for kex algorithms (client: diffie-hellman-group1-sha1,ext-info-c / server: sntrup761x25519-sha512,sntrup761x25519-sha512@openssh.com,mlkem768x25519-sha256,mlkem1024nistp384-sha384,mlkem768nistp256-sha256,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,diffie-hellman-group18-sha512,diffie-hellman-group17-sha512,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,ext-info-s) [odl-netconf-client-0] INFO org.opendaylight.netconf.transport.ssh.TransportClientSession - Disconnecting(TransportClientSession[username@/127.0.0.1:42069]): SSH2_DISCONNECT_KEY_EXCHANGE_FAILED - Unable to negotiate key exchange for kex algorithms (client: diffie-hellman-group1-sha1,ext-info-c / server: sntrup761x25519-sha512,sntrup761x25519-sha512@openssh.com,mlkem768x25519-sha256,mlkem1024nistp384-sha384,mlkem768nistp256-sha256,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,diffie-hellman-group18-sha512,diffie-hellman-group17-sha512,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,ext-info-s) [netconf-timer-6] WARN io.netty.util.HashedWheelTimer - An exception was thrown by TimerTask. java.util.concurrent.RejectedExecutionException: event executor terminated at io.netty.util.concurrent.SingleThreadEventExecutor.reject(SingleThreadEventExecutor.java:1005) at io.netty.util.concurrent.SingleThreadEventExecutor.offerTask(SingleThreadEventExecutor.java:388) at io.netty.util.concurrent.SingleThreadEventExecutor.addTask(SingleThreadEventExecutor.java:381) at io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:907) at io.netty.util.concurrent.SingleThreadEventExecutor.execute0(SingleThreadEventExecutor.java:873) at io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:863) at org.opendaylight.netconf.nettyutil.NetconfSessionNegotiator.lambda$start$1(NetconfSessionNegotiator.java:188) at io.netty.util.HashedWheelTimer$HashedWheelTimeout.run(HashedWheelTimer.java:716) at io.netty.util.concurrent.ImmediateExecutor.execute(ImmediateExecutor.java:34) at io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:704) at io.netty.util.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:790) at io.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:500) at java.base/java.lang.VirtualThread.run(VirtualThread.java:329) [server-7] INFO org.opendaylight.netconf.shaded.sshd.server.keyprovider.SimpleGeneratorHostKeyProvider - generateKeyPair(EC) generating host key=nistp521 [server-7] WARN org.opendaylight.netconf.transport.ssh.TransportServerSession - exceptionCaught(TransportServerSession[null@/127.0.0.1:35422])[state=Opened] SshException: Unable to negotiate key exchange for kex algorithms (client: diffie-hellman-group1-sha1,ext-info-c / server: sntrup761x25519-sha512,sntrup761x25519-sha512@openssh.com,mlkem768x25519-sha256,mlkem1024nistp384-sha384,mlkem768nistp256-sha256,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,diffie-hellman-group18-sha512,diffie-hellman-group17-sha512,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,ext-info-s) [server-7] WARN org.opendaylight.netconf.transport.ssh.SSHTransportStack - Session 1 encountered an error org.opendaylight.netconf.shaded.sshd.common.SshException: Unable to negotiate key exchange for kex algorithms (client: diffie-hellman-group1-sha1,ext-info-c / server: sntrup761x25519-sha512,sntrup761x25519-sha512@openssh.com,mlkem768x25519-sha256,mlkem1024nistp384-sha384,mlkem768nistp256-sha256,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,diffie-hellman-group18-sha512,diffie-hellman-group17-sha512,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,ext-info-s) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.negotiate(AbstractSession.java:2275) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.performKexNegotiation(AbstractSession.java:923) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.lambda$doKexNegotiation$3(AbstractSession.java:912) at org.opendaylight.netconf.shaded.sshd.common.future.AbstractSshFuture.lambda$notifyListener$3(AbstractSshFuture.java:178) at org.opendaylight.netconf.shaded.sshd.common.util.threads.ThreadUtils.runAsInternal(ThreadUtils.java:64) at org.opendaylight.netconf.shaded.sshd.common.future.AbstractSshFuture.notifyListener(AbstractSshFuture.java:177) at org.opendaylight.netconf.shaded.sshd.common.future.DefaultSshFuture.addListener(DefaultSshFuture.java:214) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.doKexNegotiation(AbstractSession.java:909) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.handleKexInit(AbstractSession.java:868) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.doHandleMessage(AbstractSession.java:597) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.lambda$handleMessage$0(AbstractSession.java:546) at org.opendaylight.netconf.shaded.sshd.common.util.threads.ThreadUtils.runAsInternal(ThreadUtils.java:68) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.handleMessage(AbstractSession.java:545) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.decode(AbstractSession.java:1729) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.messageReceived(AbstractSession.java:506) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:64) at org.opendaylight.netconf.shaded.sshd.netty.NettyIoSession.channelRead(NettyIoSession.java:302) at org.opendaylight.netconf.shaded.sshd.netty.NettyIoSession$Adapter.channelReadComplete(NettyIoSession.java:409) at io.netty.channel.AbstractChannelHandlerContext.fireChannelReadComplete(AbstractChannelHandlerContext.java:387) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelReadComplete(DefaultChannelPipeline.java:1434) at io.netty.channel.DefaultChannelPipeline.fireChannelReadComplete(DefaultChannelPipeline.java:932) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:172) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.handle(AbstractNioChannel.java:445) at io.netty.channel.nio.NioIoHandler$DefaultNioRegistration.handle(NioIoHandler.java:381) at io.netty.channel.nio.NioIoHandler.processSelectedKey(NioIoHandler.java:575) at io.netty.channel.nio.NioIoHandler.processSelectedKeysOptimized(NioIoHandler.java:550) at io.netty.channel.nio.NioIoHandler.processSelectedKeys(NioIoHandler.java:491) at io.netty.channel.nio.NioIoHandler.run(NioIoHandler.java:468) at io.netty.channel.SingleThreadIoEventLoop.runIo(SingleThreadIoEventLoop.java:206) at io.netty.channel.SingleThreadIoEventLoop.run(SingleThreadIoEventLoop.java:177) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:1073) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at java.base/java.lang.Thread.run(Thread.java:1583) [odl-netconf-client-0] WARN org.opendaylight.netconf.transport.ssh.TransportClientSession - exceptionCaught(TransportClientSession[username@/127.0.0.1:38823])[state=Opened] SshException: Unable to negotiate key exchange for kex algorithms (client: diffie-hellman-group1-sha1,ext-info-c / server: sntrup761x25519-sha512,sntrup761x25519-sha512@openssh.com,mlkem768x25519-sha256,mlkem1024nistp384-sha384,mlkem768nistp256-sha256,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,diffie-hellman-group18-sha512,diffie-hellman-group17-sha512,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,ext-info-s) [odl-netconf-client-0] WARN org.opendaylight.netconf.transport.ssh.SSHTransportStack - Session 1 encountered an error org.opendaylight.netconf.shaded.sshd.common.SshException: Unable to negotiate key exchange for kex algorithms (client: diffie-hellman-group1-sha1,ext-info-c / server: sntrup761x25519-sha512,sntrup761x25519-sha512@openssh.com,mlkem768x25519-sha256,mlkem1024nistp384-sha384,mlkem768nistp256-sha256,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,diffie-hellman-group18-sha512,diffie-hellman-group17-sha512,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,ext-info-s) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.negotiate(AbstractSession.java:2275) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.performKexNegotiation(AbstractSession.java:923) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.lambda$doKexNegotiation$3(AbstractSession.java:912) at org.opendaylight.netconf.shaded.sshd.common.future.AbstractSshFuture.lambda$notifyListener$3(AbstractSshFuture.java:178) at org.opendaylight.netconf.shaded.sshd.common.util.threads.ThreadUtils.runAsInternal(ThreadUtils.java:64) at org.opendaylight.netconf.shaded.sshd.common.future.AbstractSshFuture.notifyListener(AbstractSshFuture.java:177) at org.opendaylight.netconf.shaded.sshd.common.future.DefaultSshFuture.addListener(DefaultSshFuture.java:214) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.doKexNegotiation(AbstractSession.java:909) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.handleKexInit(AbstractSession.java:868) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.doHandleMessage(AbstractSession.java:597) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.lambda$handleMessage$0(AbstractSession.java:546) at org.opendaylight.netconf.shaded.sshd.common.util.threads.ThreadUtils.runAsInternal(ThreadUtils.java:68) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.handleMessage(AbstractSession.java:545) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.decode(AbstractSession.java:1729) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSession.messageReceived(AbstractSession.java:506) at org.opendaylight.netconf.shaded.sshd.common.session.helpers.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:64) at org.opendaylight.netconf.shaded.sshd.netty.NettyIoSession.channelRead(NettyIoSession.java:302) at org.opendaylight.netconf.shaded.sshd.netty.NettyIoSession$Adapter.channelReadComplete(NettyIoSession.java:409) at io.netty.channel.AbstractChannelHandlerContext.fireChannelReadComplete(AbstractChannelHandlerContext.java:387) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelReadComplete(DefaultChannelPipeline.java:1434) at io.netty.channel.DefaultChannelPipeline.fireChannelReadComplete(DefaultChannelPipeline.java:932) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:172) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.handle(AbstractNioChannel.java:445) at io.netty.channel.nio.NioIoHandler$DefaultNioRegistration.handle(NioIoHandler.java:381) at io.netty.channel.nio.NioIoHandler.processSelectedKey(NioIoHandler.java:575) at io.netty.channel.nio.NioIoHandler.processSelectedKeysOptimized(NioIoHandler.java:550) at io.netty.channel.nio.NioIoHandler.processSelectedKeys(NioIoHandler.java:491) at io.netty.channel.nio.NioIoHandler.run(NioIoHandler.java:468) at io.netty.channel.SingleThreadIoEventLoop.runIo(SingleThreadIoEventLoop.java:206) at io.netty.channel.SingleThreadIoEventLoop.run(SingleThreadIoEventLoop.java:177) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:1073) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at java.base/java.lang.Thread.run(Thread.java:1583) [server-7] INFO org.opendaylight.netconf.transport.ssh.TransportServerSession - Disconnecting(TransportServerSession[null@/127.0.0.1:35422]): SSH2_DISCONNECT_KEY_EXCHANGE_FAILED - Unable to negotiate key exchange for kex algorithms (client: diffie-hellman-group1-sha1,ext-info-c / server: sntrup761x25519-sha512,sntrup761x25519-sha512@openssh.com,mlkem768x25519-sha256,mlkem1024nistp384-sha384,mlkem768nistp256-sha256,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,diffie-hellman-group18-sha512,diffie-hellman-group17-sha512,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,ext-info-s) [odl-netconf-client-0] INFO org.opendaylight.netconf.transport.ssh.TransportClientSession - Disconnecting(TransportClientSession[username@/127.0.0.1:38823]): SSH2_DISCONNECT_KEY_EXCHANGE_FAILED - Unable to negotiate key exchange for kex algorithms (client: diffie-hellman-group1-sha1,ext-info-c / server: sntrup761x25519-sha512,sntrup761x25519-sha512@openssh.com,mlkem768x25519-sha256,mlkem1024nistp384-sha384,mlkem768nistp256-sha256,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,diffie-hellman-group18-sha512,diffie-hellman-group17-sha512,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,ext-info-s) [main] INFO org.opendaylight.netconf.common.impl.NettyNetconfTimer - NETCONF timer stopped