There is no way to configure LACP administrative variables, including system and port priorities. The current implementation of the
agr driver always performs active-mode LACP and uses 0x8000 as system and port priorities.
The
agr driver uses the MAC address of the first-added physical interface as the MAC address of the
agr interface itself. Thus, removing the physical interface and using it for another purpose can result in non-unique MAC addresses.
The current implementation of the
agr driver doesn't prevent unsafe operations like some ioctls against underlying physical interfaces. Such operations can result in unexpected behaviors, and are strongly discouraged.
There is no way to configure
agr interfaces without attaching physical interfaces.
Physical interfaces being added to the
agr interface shouldn't have any addresses except for link level address. Otherwise, the attempt will fail with
EBUSY. Note that it includes an automatically assigned IPv6 link-local address.