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d0e01bb3fc
The API for neighbour_tx() allows for an explicit source link-layer address, but this will be ignored if the packet is deferred for transmission after completion of neighbour discovery. The network device's own link-layer address will always be used when sending neighbour discovery packets, and when sending any deferred packets after discovery completes. All callers pass in the network device's own link-layer address as the source address anyway, and so this explicit source link-layer address is never used for any meaningful purpose. Simplify the neighbour_tx() API by removing the ability to pass in an explicit source link-layer address. Signed-off-by: Michael Brown <mcb30@ipxe.org>