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https://issues.apache.org/jira/browse/LOG4NET-261?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stefan Bodewig updated LOG4NET-261:
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Fix Version/s: 1.2 Maintenance Release
> RemoteSyslogAppender doesn't work because of IPv6
> -------------------------------------------------
>
> Key: LOG4NET-261
> URL: https://issues.apache.org/jira/browse/LOG4NET-261
> Project: Log4net
> Issue Type: Bug
> Components: Appenders
> Affects Versions: 1.2.10
> Environment: Windows Seven x86_64
> Visual Studio Team System unit test
> Reporter: Antonio Anzivino
> Fix For: 1.2 Maintenance Release
>
> Original Estimate: 3h
> Remaining Estimate: 3h
>
> I tried to make experiments with Log4net and Syslog appender for a research
> open source project I'm working.
> Tried to send the log messages to a local UDP listener using
> RemoteSyslogAppender.
> Logging code executed but on the debug console I got an exception:
> log4net:ERROR [RemoteSyslogAppender] Unable to send logging event to remote
> syslog fe80::8038:6515:ad7a:bdb5%15 on port 3434.
> System.Net.Sockets.SocketException: Indirizzo utilizzato incompatibile con il
> protocollo richiesto [Address used is incompatible with required protocol]
> in System.Net.Sockets.Socket.SendTo(Byte[] buffer, Int32 offset, Int32
> size, SocketFlags socketFlags, EndPoint remoteEP)
> in System.Net.Sockets.UdpClient.Send(Byte[] dgram, Int32 bytes, IPEndPoint
> endPoint)
> in log4net.Appender.RemoteSyslogAppender.Append(LoggingEvent loggingEvent)
> ALL: 2010-07-06 23:24:11,364 [Agent: adapter run thread for test 'TestMethod'
> with id 'f3dfe8eb-635a-4683-8777-a029f3897071'] ERROR ALL [(null)] - Test
> error message
> RemoteSyslogAppender is trying to send the message to an IPv6 address rather
> than 127.0.0.1
> Precisely, if I configure <remoteAddress> as "localhost", it tries to send to
> ::1, if I use "127.0.0.1" it tries to send to an IPv6 link-local address
> (fe80:...)
> Code can be found at
> https://logbus-ng.svn.sourceforge.net/viewvc/logbus-ng/trunk/logbus-core/Log4test/?pathrev=106
> as a Visual Studio Unit Test.
> It is revision 106 of
> https://logbus-ng.svn.sourceforge.net/svnroot/logbus-ng/trunk/logbus-core/Log4test/
> I tried to look at RemoteSyslogAppender implementation. I couldn't find a
> possible root cause because I can see you correctly initialize the UdpClient
> with parameterless constructor (UdpAppender::InitializeConnection()).
> The only way I could send datagrams was to use a FQDN as remoteAddress for
> which only A record is defined in the DNS.
> I also found that the RemoteSyslog appender doesn't respect RFC3164 by
> default unless you configure it with an appropriate pattern. I will open a
> new issue about it.
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