[systemd-devel] configuring nspawn private network (mtu & mac)

[Ede Wolf]

Got it. On the host I need to match OriginalName, not Name, in the link 
file. Then I am able to set the macaddress and the mtu.

Since I am not sure, how stable those names are (as in 
vb-webserver at if3), is there maybe a way I have missed to label the 
interface names in the .nspawn file to later reference them in the .link 
file?



Am 01.07.24 um 16:07 schrieb Ede Wolf:
> Hello,
> 
> I am having two container connected via private network to a bridge with 
> a mtu of 8k.
> 
> However the .nspawn generated interfaces have the default mtu of 1500. 
> And while I can manually adjust the mtu to 8k using the ip link command, 
> I am wondering, wethere there is a way to specify the mtu right in first 
> place?
> 
> Having "MTUBytes=8192" inside the containers host0.network does not do 
> the trick. While the mtu inside the container is shown as 8k, the hosts 
> still lists the interface with an mtu of 1500 - and this of course 
> creates problems.
> 
> And, while we are at it, is there a way to specify the mac as well?
> 
> Thanks
> 
> Ede