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Re: [dhcwg] Regarding DHCP Discover with Dest Ip as subnet broadcast

Ted Lemon <mellon@fugue.com> Mon, 18 May 2020 15:59 UTC

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From: Ted Lemon <mellon@fugue.com>
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Date: Mon, 18 May 2020 11:59:05 -0400
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To: Venkataratnam Naidu <ratnameee@gmail.com>
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Subject: Re: [dhcwg] Regarding DHCP Discover with Dest Ip as subnet broadcast
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On May 18, 2020, at 11:42 AM, Venkataratnam Naidu <ratnameee@gmail.com> wrote:
> Broadcast here means only all network broadcast(255.255.255.255) , or does it also includes the subnet broadcast.  

You want the link-local (255.255.255.255) broadcast. The subnet broadcast could in theory work, but if it’s resolving to a station address and not the ethernet broadcast address, you don’t have a subnet, and the host is not interpreting it as a broadcast address. You should just use 255.255.255.255—this will always work.

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