There are known issues with the robustness of the network interface on V4.3 release. Here is the note from the FTP site:
A small percentage of VS customers have experienced TCP/IP network stability issues.
We have temporarily removed VS SW 4.3 from distribution while we investigate and correct this issue.
They talked about this at the NUG last year. I expect an update next month.
Ron Huckeby, CBRE
From: Thomas Cottle [mailto:Tom@Faithradio.us]
Sent: Thursday, March 22, 2018 11:16 AM
To: 'CRTech' <email@example.com>
Subject: [CRTech] Nautel Transmitters
We have three Nautel Transmitters, a vs 2.5, an NV 3.5 LT, and a NV 5. We have been having random Lan disconnection issues. Are we the only ones having troubles with the Nautel Transmitters?
Faith Radio Network, WFRF