6.2 mtu now limits size of incomming packet
julian at elischer.org
Thu Jul 19 03:46:17 UTC 2007
Mike Karels wrote:
>> There are also things to consider such as if a GigE card is connected to
>> a GigE device (switch/card etc) and the card supports jumbo frames
>> should the MRU be set to the max jumbo receive size for the card? This
>> could cause confusion when people plug jumbo capable devices in with
>> hardware limitations making the MRU lower than other devices on the network.
> Although we don't have an MRU explicitly, we don't enable reception
> of jumbo frames without administrator action. There is an IFCAP_JUMBO_MTU
> flag defined, but not previously used as far as I know. We added the
> ability to set that flag with ifconfig, which enables reception of
> jumbo frames without changing the MTU. Then, in ether_input, we accept
> any packet that a NIC sees fit to receive.
for what values of "we"?
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