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xen-users
RE: [Xen-devel] Ethernet MTU
> > Even 802.1q tags require explicitly lowering the mtu to 1496 to
work.
>
> I thought the IP layer was supposed to fragment packets if they do not
> fit in the underlying ethernet's MTU.
>
> (What's the point about fragmentation, otherwise?)
802.1q is an ethernet protocol (vlan tagging for trunking multiple
vlan's over the same physical interface). It lives under IP.
James
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