RHEL 7 NFS issues (xs_tcp_setup_socket: connect returned unhandled error -107)

Greetings,

I am having some issues with NFS clients on two separate physical servers. Often 'dmesg -T' shows the following output several times an hour:

dmesg:

xs_tcp_setup_socket: connect returned unhandled error -107

/var/log/messages:

kernel: xs_tcp_setup_socket: connect returned unhandled error -107

This is apparently causing applications to hang for a time. I am unable to find any information regarding this error specifically for RHEL7. The server is a NetApp appliance with dozens of other NFS shares. We've tried re-creating the shares, just in case... and also connecting to shares we know are working, with the same results.

Anyone else having this issue? We're pinned to RHEL 7.3.

A further note: This is a production server; the dev and test servers running the same application, same OS aren't having this issue.

Distributor ID: RedHatEnterpriseServer
Release: 7.3

Linux hostname 3.10.0-514.26.2.el7.x86_64 #1 SMP Fri Jun 30 05:26:04 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux