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The eIPoIB translation layer needs to translate outbound ARP packets from Ethernet to IPoIB. A 64-byte buffer (starting with the Ethernet header) does not provide enough tailroom to expand to hold the two 20-byte IPoIB MAC addresses. The result is that an UNDI API user will be unable to send ARP packets. We could potentially shuffle the packet contents to reuse the space occupied by the stripped Ethernet link-layer header, but this would add complexity. Instead, fix by increasing the minimum allocation size to 128 bytes. Signed-off-by: Michael Brown <mcb30@ipxe.org>
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