Re: iwd configure location and files

[Denis Kenzior <denkenz at gmail.com>]

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Hi Jupiter,

> My bad, here is DHCP debugging, looks like failed to get DHCP server response:
> 
> ../iwd-1.19/src/station.c:station_autoconnect_next() autoconnect:
> '34:08:04:12:b1:a2' freq: 2437, rank: 2722, strength: -6500
> ../iwd-1.19/src/station.c:station_enter_state() Old State:
> autoconnect_full, new state: connecting (auto)
> ../iwd-1.19/src/station.c:station_netdev_event() Associating
> ../iwd-1.19/src/station.c:station_handshake_event() Setting keys
> ../iwd-1.19/src/station.c:station_connect_cb() 14, result: 0
> ../iwd-1.19/src/station.c:station_connect_ok()
> netconfig: Failed to start DHCPv4 client for interface 14
> WARNING: ../iwd-1.19/src/station.c:station_connect_ok() condition
> !netconfig_configure(station->netconfig,

Ugh, not sure what happens here.  First, can you update to iwd 1.20?  I don't 
think anything was touched around this for several releases, but I'd hate to try 
and debug an old version.  Also, share the full log of iwd when this happens...

Can you strace iwd and see what syscall might be failing around this time?  You 
may also need to step through l_dhcp_client_start to see why it is failing.  It 
really shouldn't under normal circumstances, hence we have no debugs in this area.

> station_netconfig_event_handler, station) failed
> [DHCPv4] dhcp_client_timeout_resend:526
> [DHCPv4] dhcp_client_send_discover:346
> [DHCPv4] dhcp_client_timeout_resend:526
> [DHCPv4] dhcp_client_send_discover:346
> [DHCPv4] dhcp_client_timeout_resend:526
> [DHCPv4] dhcp_client_send_discover:346
> [DHCPv4] dhcp_client_timeout_resend:526
> [DHCPv4] dhcp_client_send_discover:346

And this is even more strange.  If l_dhcp_client_start() fails, then the resend 
timer shouldn't even be set and you shouldn't even see this sequence.

Can you try compiling with optimizations off (./configure --enable-debug 
--disable-optimization) and see if the behavior changes?

> 
> Is netconfig from iwd?

yes

> 
> I think the DHCP server is running from the home WiFi modem, right? My
> laptop is also connected to the same WiFi modem SSID JupiterIoT which
> should rule out home WiFi network DHCP server issues.

Given the fact that we fail to start dhcp client, I'm not sure we even send any 
discover packets.  So your server might be just fine.

Regards,
-Denis