[Bug 270285] Network issue with very small frames (tcp, padded)
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Date: Fri, 17 Mar 2023 12:58:57 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270285
Michael Tuexen <tuexen@freebsd.org> changed:
What |Removed |Added
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CC| |tuexen@freebsd.org
--- Comment #1 from Michael Tuexen <tuexen@freebsd.org> ---
The two bytes after the IPv4 packet are padding. It is required, since the an
ethernet frame must be at least of 64 bytes. The last 4 bytes are frame check
sequence, so there must be 60 bytes. The IPv4 packet is 44 bytes, plus 6 bytes
source, 6 bytes dest, 2 bytes upper layer information makes 58 bytes. Therefore
2 bytes is appended.
See https://en.wikipedia.org/wiki/Ethernet_frame
So the packet looks correct to me.
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