How to delay the initialization of interfaces during boot after switching the composition (mode) of the LTE modem HUAWEI e3372

rkokorev

Hi guys!

I use LTE (HUAWEI e3372) modem as WAN
after initializing the modem, I switch it to cdc_ether mode through the usb_modeswitch utility
https://www.draisberghof.de/usb_modeswitch
for autoswitching during boot I use devd action https://gist.github.com/elupus/b926858a0cfb1f055be81509500b4032

PROBLEM: The modem does not have time to switch the final mode during the booting.
and loading hangs on error "Network interface mismatch... " (see screenshot above)

I hade tried:

using loader_delay setting
using shellcmd to run switch batch
I tried several computers

=== the behavior is the same (

please help!!!

Gertjan

@rkokorev said in How to delay the initialization of interfaces during boot after switching the composition (mode) of the LTE modem HUAWEI e3372:

please help!!!

Consider helping yourself a lot by not using a device with only one NIC. And if it has to be one NIC, not a Realtek.

Trying to use USB NIC's as useable network devices is not a good idea.
When the system boots they need time to 'wake up' (but you already found this out I guess).
pfSense is based on FreeBSD : no good (network) USB support. aka it easy for yourself : it's plain bad so its no option so no more issues.

For the good news :

I do remember that there is a possibility to inform the USB driver / or kernel ? that it should not wait while this device is ready ... something like that.
It's here, somewhere on the forum.

viktor_g

@rkokorev you need to use earlyshellcmd for this
see https://docs.netgate.com/pfsense/en/latest/development/boot-commands.html#earlyshellcmd-option

rkokorev

@gertjan is it: vfs.root_mount_always_wait="1" ? https://lists.freebsd.org/pipermail/freebsd-stable/2017-February/086831.html

rkokorev

@viktor_g I have tried, not helped (

viktor_g

@rkokorev also add sleep 10
see https://redmine.pfsense.org/issues/11154

stephenw10

Previously when hitting this we have exluded ue from the validury check by adding it here:
https://github.com/pfsense/pfsense/blob/RELENG_2_4_5/src/etc/inc/util.inc#L2207
But that brings it's own problems if in fact the interface is not present. Usually preferable to failing to boot though.

Steve

rkokorev

@viktor_g it - helped! thank you so match!

... && sleep 10

rkokorev

and to the end:
I have connected two LTE modem (dual WAN): earlyshellcmd and shellcmd - working in not correct.
Corrcect working is only "devd" mechanism!