> One of the things I having a hard time understanding is: where is
> hw_address allocated for vnet_hw_interface_t ?
> I cannot find it anywhere.
It is allocated when registering an interface which uses a hw_address. The
common case is Ethernet:
ethernet_register_interface()
ethernet_set_mac ()
vec_validate (hi->hw_address, sizeof (mac_address_t) - 1)
If your question is who decide which mac address is to be used, it is
driver-dependent: HW-backed drivers (eg. AVF) tends to use the NIC mac, others
(eg. tap) will generate a random mac at creation time.
ben
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