upgrading raspberry pi required me to re install wireguard

[sch0rsch at arcor.de]

In case of WireGuard DPKG package being installed, just run: 
dpkg-reconfigure wireguard-dkms

This will rebuild the module for the current and latest installed 
kernel+headers.

In some cases, kernel package updates even automatically trigger the 
rebuild, e.g. on Debian x86 with linux-image-amd64/linux-headers-amd64, 
AFAIK. But this is up to the package maintainers and depend on the 
OS/package system.

Best regards

Am 21.02.2019 um 13:28 schrieb logcabin at fastmail.net:
> Yes, the kernel did get updated, causing the wg module dependencies to 
> get out of sync. A reboot after the update should solve this, otherwise 
> you may need to run the package's preinst script to get the modules back 
> in sync. Should be no need to reinstall the wg packages.
> 
> On Thu, Feb 21, 2019, at 2:14 AM, Arpit Gupta wrote:
>> Hi All
>>
>> I am running raspberry pi v3 and ran apt-get update and upgrade 
>> commands to get upto date. It also ended up updating the kernel i 
>> think. I should have paid more attention to what all was getting updated.
>>
>> After the update wireguard was not running and upon debugging i found 
>> that the wireguard kernel module was no longer present. So i 
>> uninstalled all wireguard packages and installed them again and the 
>> module showed up and on reboot system was back to normal. What i was 
>> curious was how should one go about doing os/kernel updates in future 
>> in order to avoid this issue?
>>
>> I am running
>> Linux raspberrypi 4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 GMT 2019 
>> armv7l GNU/Linux
>> No LSB modules are available.
>> Distributor ID:Raspbian
>> Description:Raspbian GNU/Linux 9.8 (stretch)
>> Release:9.8
>> Codename:stretch
>>
>> ii  wireguard                       0.0.20190123-1               all  
>>         fast, modern, secure kernel VPN tunnel (metapackage)
>> ii  wireguard-dkms                  0.0.20190123-1               all  
>>         fast, modern, secure kernel VPN tunnel (DKMS version)
>> ii  wireguard-tools                 0.0.20190123-1              
>>  armhf        fast, modern, secure kernel VPN tunnel (userland utilities)
>>
>> --
>> Arpit
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>> WireGuard at lists.zx2c4.com
>> https://lists.zx2c4.com/mailman/listinfo/wireguard
>>
> 
> 
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