NAME

umb — USB Mobile Broadband Interface Model (MBIM)

SYNOPSIS

umb* at uhub?

DESCRIPTION

The umb driver provides support for USB MBIM devices.

MBIM devices establish connections via cellular networks such as GPRS, UMTS, and LTE. They appear as a regular point-to-point network interface, transporting raw IP frames. Once a connection is established, the device will automatically set an IP address and send out a nameserver proposal, which resolvd(8) can act on.

Required configuration parameters like PIN and APN have to be set with ifconfig(8). Once the SIM card has been unlocked with the correct PIN, it will remain in this state until the MBIM device is power-cycled. In case the device is connected to an "always-on" USB port, it may be possible to connect to a provider without entering the PIN again even if the system was rebooted.

HARDWARE

The following devices should work:

EXAMPLES

The following hostname.if(5) example configures umb0 to set the APN to “internet”, enabling data roaming, and obtaining an IP address using IPv6 stateless address autoconfiguration:

pin 1234
apn internet
inet6 autoconf
roaming

SEE ALSO

intro(4), netintro(4), usb(4), hostname.if(5), ifconfig(8), route(8)

Universal Serial Bus Communications Class Subclass Specification for Mobile Broadband Interface Model, https://www.usb.org/document-library/mobile-broadband-interface-model-v10-errata-1-and-adopters-agreement.

CAVEATS

Devices which fail to provide a conforming MBIM implementation will probably be attached as some other driver, such as umsm(4).