Null pointer Exception warning in the logs

[pgeorgiadis]

Steps to Reproduce

1. Install besu in a fresh installation of ubuntu 24.04 LTS
2. Start the besu service and let it start syncing
3. Check the logs

Expected behavior: Warning appears in the logs

Actual behavior: Warning about NPE appears in the logs

Frequency: Every 10 minutes

Logs

2025-01-10 17:39:44.429+01:00 | vert.x-eventloop-thread-3 | WARN  | DefaultChannelPipeline | An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception.
java.lang.NullPointerException: Cannot invoke "io.netty.handler.codec.dns.DefaultDnsQuestion.name()" because "question" is null
        at io.vertx.core.dns.impl.DnsClientImpl$1.channelRead0(DnsClientImpl.java:88)
        at io.vertx.core.dns.impl.DnsClientImpl$1.channelRead0(DnsClientImpl.java:84)
        at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
        at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:107)
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
        at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357)
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868)
        at io.netty.channel.epoll.EpollDatagramChannel.processPacket(EpollDatagramChannel.java:662)
        at io.netty.channel.epoll.EpollDatagramChannel.recvmsg(EpollDatagramChannel.java:697)
        at io.netty.channel.epoll.EpollDatagramChannel.access$300(EpollDatagramChannel.java:56)
        at io.netty.channel.epoll.EpollDatagramChannel$EpollDatagramChannelUnsafe.epollInReady(EpollDatagramChannel.java:536)
        at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:501)
        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:399)
        at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
        at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
        at java.base/java.lang.Thread.run(Thread.java:1583)

Versions (Add all that apply)

• Software version: besu/v24.12.2/linux-aarch_64/openjdk-java-21
• Java version: openjdk version "21.0.5" 2024-10-15
• OS Name & Version: Ubuntu 24.04.1 LTS
• Kernel Version: 6.8.0-51-generic
• Virtual Machine software & version: -
• Docker Version: -
• Cloud VM, type, size: -
• Consensus Client & Version if using Proof of Stake: -