Re: connecting to digikam mariadb host from two different subnet

On 5/29/26 9:18 PM, Daniel Bauer wrote:
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> Am 29.05.26 um 18:56 schrieb leoutation-W9aAOI/[email protected]:
>> Hi
>> I use Digikam/Mariadb with address/static/hostname like 192.168.2.xx=20
>> on local ethernet network, in same computer subnet. It runs fine when=
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>> connecting from two machines in same subnet.
>> When using wireless/static address on a computer,=C2=A0 subnet is=20
>> different, computer address is now 192.168.3.xx
>> So, I'm unable to connect to digikam db , hostname 192.168.2.xx now=20
>> when using wireless
>> Is there a way to configure digikam and/or mariadb to connect to same=
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>> digikam mariadb hostname from different subnet ?
>> Thanks
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> This is not a digikam but a network problem. You cannot directly connect=
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> to a machine in another subnet than its own.
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> The easiest solution is to connect both computers to the same subnet=20
> (e.g. both same ethernet, or both same wifi).
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> If you can't, you need routing between the subnets and set up your=20
> router accordingly or add routes manually on the computers using the=20
> "route add" command.
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> You can also install Tailscale or ZeroTier on both computers; they=20
> connect regardless of subnets/firewalls.
> Or use WireGuard: Lightweight VPN.
> Or mDNS / Avahi: For hostname resolution (.local names) across subnets=
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> (install Avahi on Linux, enable Bonjour on Windows/macOS).

I forgot to say I use Arch Linux, systemd-network and iwd
I solved the problem in a very simple way with IP aliasing
Just run
ip addr add 192.168.2.xx/24 dev wlan0

To make the change permanent, I add ethernet/digikam address in=20
/etc/systemd/network/26-wireless.network

[Network]
Address=3D192.168.3.xx/24    #wireless
Address=3D192.168.2.xx/24    #ethernet added line

For other distributions/configurations, good explanations here
https://www.linuxboost.com/a-step-by-step-guide-on-how-to-set-up-ip-aliasi=
ng-on-linux/
https://penguintutor.com/linux/networking-ip-alias-tutorial

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> Search for your best solution in network manuals/forums for your=20
> operating system and router type.
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