How to connect to RV50 modem from a linux host

I have enabled cdc_ether, usbnet and g_ether modules on my linux kernel and I can see a usb0 device come up on my system. The output of lsusb -v suggests that the RV50 is registered with my linux host (1a78:0301). But I am unable to communicate with the device over usb. Any help documents over this could be helpful. I am a beginner on the USB driver usage.

Hi @mukul.mehra8

You can connect to RV50 with USBNET IP: (http://192.168.14.31:9191) from a Linux host.

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To configure the RV50 USBNET 192.168.14.31. Go to ACEManager–> LAN --> USB: USB Device
Mode: USBNET, Device USB IP: 192.168.14.31
Apply all changes and reboot RV50.

Please help to tick “Solution” if your question is answered.

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Attaching to an older device (RavenXE) using a USB works without needing to configure anything, it seems to all be handled seemlessly by the OS. This RavenXE model presents the same VID:PID (1a78:0301) as the RV50, RV50X and RV55.
For those RV5XX variants on my Raspbian (Ubuntu 20.04 and 20.10 LTS) establishing a connection requires the manual execution of this command
/usr/sbin/dhclient usb0
There are no error messages to indicate why this fails in the first place or why executing dhclient manually fixes the issue.