OSPF default metric

[Marcus Büttemeyer]

Hello again,
I'm wondering how OSPF default metrics are calculated by BIRD?
Background: I'm running 4 Linux VMs with BIRD under Hyper-V and BIRD gives
me a metric of 10 for every connection, be it 10G (which seems to be the
default for vSwitches on Hyper-V), 1G or wireless. Even though the physical
speed is passed from the hypervisor to the VMs. At least "cat
/sys/class/net/INT/speed" gives the proper value.
If I knew where the metric comes from, I could try to fix that on the
OS-level and save myself separate cost definitions for every interface.

Thanks in advance,
Marcus Büttemeyer
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