Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: change_mtu boundary checking error | Date | Tue, 17 Apr 2001 13:40:34 +0100 (BST) | From | Alan Cox <> |
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> Now, the high boundary seemed reasonable (ETH_FRAME_LEN - ETH_HLEN = > ETH_DATA_LEN) which gives 1500, but why is the low boundary set to 68 ? > According to my calculations, it should have been ETH_ZLEN - ETH_HLEN which > gives 46.
The IPv4 minimum MTU is 68 bytes. Below that not all frames can be delivered
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