Daniel, Thanks for the guidance about logging. I haven't done packet captures yet but this is what I'm seeing logged around the time of the error condition: 11/03/2020 21:51:34 : epoch 5e6994c3 : nfs-server-hostname : ganesha.nfsd-168948[svc_18] rpc :TIRPC :F_DBG :svc_dg_reply: 0x7f35640008c0 fd 13 sendmsg failed (will set dead) 11/03/2020 21:51:34 : epoch 5e6994c3 : nfs-server-hostname : ganesha.nfsd-168948[svc_18] complete_request :DISP :DEBUG :NFS DISPATCHER: FAILURE: Error while calling svc_sendreply on a new request. rpcxid=3984287200 socket=13 function:nfs3_read client:::ffff:10.1.2.3 program:100003 nfs version:3 proc:6 errno: 11 and from the client's perspective nothing can be done with the nfs mount until the nfs-ganesha server is restarted. Do you have any suggestions for a recommended tcpdump command line to capture all useful traffic? Thanks, Todd