6.2 mtu now limits size of incomming packet

[Julian Elischer]

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"?

> 
> 		Mike
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