[ixp1200] How to duplicate a packet in memory?

Hi, I'm wondering what is the best way to duplicate a packet in SDRAM? The reason for this is that I want to send one copy of the packet to the StrongARM and the other copy will be forwarded to a different host after some modifications. 1. I could loop in microcode and use sdram[read] -> sdram[write] in sequence until I reach the end of the packet. 2. I can copy it using the StrongARM, but this would probably mean that the whole forwarding process will be stalled until the copying is finished. 3. There is some 'magic' instruction that does this for me, that I'm unaware of. I'd much appreciate it if someone could give me a clue about what is the best practice here? Info: ENP-2505, embedded linux, Intel SDK 2.01 -- Øyvind Hvamstad