No free ports on RHEL 7.6

Hi all,

I am trying to connect to devices on RHEL 7.6. Getting the following error:
There are no more available free ports. Try disconnecting an existing device

Full log:

uname -r

3.10.0-1062.el7.x86_64


ls -al /lib/modules/3.10.0-1062.el7.x86_64/kernel/drivers/usb/usbip/

total 2720
drwxr-xr-x. 2 root root 91 Aug 20 10:01 .
drwxr-xr-x. 12 root root 137 Aug 20 03:39 ..
-rw-r--r--. 1 root root 722008 Aug 20 10:08 usbip-core.ko
-rw-r--r--. 1 root root 9904 Jul 18 20:40 usbip-core.ko.xz
-rw-r--r--. 1 root root 962880 Aug 20 10:08 usbip-host.ko
-rw-r--r--. 1 root root 1080088 Aug 20 10:08 vhci-hcd.ko


journalctl -xe

Aug 21 06:06:38 hostname.internal kernel: vhci_hcd: module_layout: kernel tainted.
Aug 21 06:06:38 hostname.internal kernel: Disabling lock debugging due to kernel taint
Aug 21 06:06:38 hostname.internal kernel: vhci_hcd: loading out-of-tree module taints kernel.
Aug 21 06:06:38 hostname.internal kernel: vhci_hcd: module verification failed: signature and/or required
Aug 21 06:06:38 hostname.internal kernel: vhci_hcd vhci_hcd.0: USB/IP Virtual Host Controller
Aug 21 06:06:38 hostname.internal kernel: vhci_hcd vhci_hcd.0: new USB bus registered, assigned bus number
Aug 21 06:06:38 hostname.internal kernel: vhci_hcd: vhci_start:1200: created sysfs vhci_hcd.0
Aug 21 06:06:38 hostname.internal kernel: usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, b
Aug 21 06:06:38 hostname.internal kernel: usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber
Aug 21 06:06:38 hostname.internal kernel: usb usb1: Product: USB/IP Virtual Host Controller
Aug 21 06:06:38 hostname.internal kernel: usb usb1: Manufacturer: Linux 3.10.0-1062.el7.x86_64 vhci_hcd
Aug 21 06:06:38 hostname.internal kernel: usb usb1: SerialNumber: vhci_hcd.0
Aug 21 06:06:38 hostname.internal kernel: hub 1-0:1.0: USB hub found
Aug 21 06:06:38 hostname.internal kernel: hub 1-0:1.0: 15 ports detected
Aug 21 06:06:38 hostname.internal kernel: vhci_hcd vhci_hcd.0: USB/IP Virtual Host Controller
Aug 21 06:06:38 hostname.internal kernel: vhci_hcd vhci_hcd.0: new USB bus registered, assigned bus number
Aug 21 06:06:38 hostname.internal kernel: usb usb2: We don't know the algorithms for LPM for this host, di
Aug 21 06:06:38 hostname.internal kernel: usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, b
Aug 21 06:06:38 hostname.internal kernel: usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber
Aug 21 06:06:38 hostname.internal kernel: usb usb2: Product: USB/IP Virtual Host Controller
Aug 21 06:06:38 hostname.internal kernel: usb usb2: Manufacturer: Linux 3.10.0-1062.el7.x86_64 vhci_hcd
Aug 21 06:06:38 hostname.internal kernel: usb usb2: SerialNumber: vhci_hcd.0
Aug 21 06:06:38 hostname.internal kernel: hub 2-0:1.0: USB hub found
Aug 21 06:06:38 hostname.internal kernel: hub 2-0:1.0: 15 ports detected
Aug 21 06:06:38 hostname.internal kernel: usb usb1: vhci_bus_suspend
Aug 21 06:06:38 hostname.internal kernel: usb usb2: vhci_bus_suspend
...
Aug 21 06:08:30 hostname.internal vhclientx86_64[1590]: VirtualHere Client: VirtualHere Client 4.8.4 starting (Compiled: Aug 19 2019 19:45:46)
Aug 21 06:08:30 hostname.internal vhclientx86_64[1590]: VirtualHere Client: Client OS is Linux 3.10.0-1062.el7.x86_64 x86_64
Aug 21 06:08:30 hostname.internal vhclientx86_64[1590]: VirtualHere Client: Using config at /root/.vhui
Aug 21 06:08:30 hostname.internal vhclientx86_64[1590]: VirtualHere Client: IPC available at /tmp/vhclient
Aug 21 06:08:30 hostname.internal vhclientx86_64[1590]: VirtualHere Client: Auto-find using Bonjour - on
Aug 21 06:08:30 hostname.internal vhclientx86_64[1590]: VirtualHere Client: Auto-find using Bonjour SSL - on
Aug 21 06:08:32 hostname.internal vhclientx86_64[1590]: VirtualHere Client: There are no more available free ports. Try disconnecting an existing device
Aug 21 06:08:33 hostname.internal vhclientx86_64[1590]: VirtualHere Client: There are no more available free ports. Try disconnecting an existing device
Aug 21 06:08:35 hostname.internal vhclientx86_64[1590]: VirtualHere Client: There are no more available free ports. Try disconnecting an existing device


Thanks.