Hi Guix, 

I'm using `connman` + `cmst` for network management on my guix machine, 
recently after I updated the system, I receive following message after login 
and `cmst` can't communicate with `connman`. I also  tried with `econnman` 
interface and received same error: 

```
Error Name: org.freedesktop.DBus.Error.AccessDenied

Error Message: Rejected send message, 3 matched rules; type="method_call", 
sender=":1.108" (uid=1000 pid=3870 comm="cmst ") 
interface="net.connman.Manager" member="GetTechnologies" error name="(unset)" 
requested_reply="0" destination="net.connman" (uid=0 pid=369 
comm="/gnu/store/1ld7hpvnhcr5wjxd15bvgbwvd50j8i04-connma")
```

I also tried to modify `connman` package and add 

<allow send_interface="net.connman.Manager"/>

policy to connman debus config, based on suggested details in: 
https://forum.obarun.org/viewtopic.php?pid=3075#p3075

but the problem still occurs. 

--
Regards
Reza Alizadeh Majd
PantherX Team



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