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Altera_Forum's avatar
Altera_Forum
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13 years ago

get MAC address of target IP

Hi, I have already spent some days searching the information how to fetch the MAC address associated with an IP address. I am primarly an FPGA designer and unfortunately beginner with regard ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

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UDP is sent by the ip stack also which implicitly handles the arp cache and translates the ip address to a mac addresss. Note that if you are sending to an ip address that is several hops away then the ip kernel provides the mac address of the default router.

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ok, I get this. But in my case UDP transmission is handled in hardware, not in NIOS. The only thing the FPGA logic requires from the NIOS in this scenario is the destination MAC address. Broadcast UDP is not what I want...