12:35:34,691 DEBUG (non-blocking-thread--p2-t2) [org.infinispan.rest.RestRequestHandler] Native IO Exception io.netty.channel.unix.Errors$NativeIoException: readAddress(..) failed: Connection reset by peer

This DEBUG message in RestRequestHandler#exceptionCaught would be more useful if it included the remote IP.  It looks like it should be accessible in ctx.channel().remoteAddress().