Multiple HDHR3-US Issue

[Bee]

When I use two or more HDHomeRun HDHR3-US devices I get a 'Unable to download channel lineup: The remote server returned an error: (404) Not Found.' error after hitting the scan button.

A single HDHR3-US scans and works properly.

Ubuntu 18.04 freshly installed
All HDHR3-US test ok one at a time with v5
All HDHR3-US work fine all together on TVHeadend and NextPVR V4
NextPVR Version 5.0.0.190710
http://ipv4-api.hdhomerun.com/api/lineup does exist for each HDHR3-US


[20] Found HDHomeRun: 1032BCF0 (2 tuners)
[20] HDHR Discover
[20] ...
[20] HDHOMERUN_TAG_DEVICE_TYPE: 1
[20] HDHOMERUN_TAG_DEVICE_ID: 103BE535
[20] HDHOMERUN_TAG_DEVICE_AUTH_STR
[20] HDHOMERUN_TAG_TUNER_COUNT: 2
[20] HDHOMERUN_TAG_BASE_URL: http://192.168.1.81:80
[20] HDHOMERUN_TAG_LINEUP_URL: http://ipv4-api.hdhomerun.com/api/lineup...3lsAkYhejy

[20] ...
[20] HDHOMERUN_TAG_DEVICE_TYPE: 1
[20] HDHOMERUN_TAG_DEVICE_ID: 1032BCF0
[20] HDHOMERUN_TAG_DEVICE_AUTH_STR
[20] HDHOMERUN_TAG_TUNER_COUNT: 2
[20] HDHOMERUN_TAG_BASE_URL: http://192.168.1.82:80
[20] HDHOMERUN_TAG_LINEUP_URL: http://ipv4-api.hdhomerun.com/api/lineup...nbh62ptzno
[20] Unable to download lineup.xml: System.Net.WebException: The remote server returned an error: (404) Not Found.
at System.Net.HttpWebRequest.GetResponse()
at System.Net.WebClient.GetWebResponse(WebRequest request)
at System.Net.WebClient.DownloadBits(WebRequest request, Stream writeStream)
at System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request)
at System.Net.WebClient.DownloadString(Uri address)
at NShared.Recorders.HDHomeRunScanner.StartScan(Dictionary`2 parameters, String& reason)
[20] {"stat":"Failed","code":11,"msg":"Unable to download channel lineup: The remote server returned an error: (404) Not Found."}