Payload for IP over Ethernet : IPv6 over IPv4

[deering@cisco.com (Steve Deering)]

At 11:11 AM +0900 4/25/00, Ettikan Kandasamy wrote:
> >So it looks as follows for TCP for IPv4 ,
>IPv6 , IPv6 over v4 and IPv4 over v6
> >
> >                   v4     v6  v6ov4  v4ov6
> >
> >IP Header          20     40    20    40
> >IP Payload       1480   1460  1480  1460
> >     Header                     40    20
> >     Payload                  1440  1440
> >TCP header         20     20    20    20
> >TCP payload      1460   1440  1420  1420
> >Any options ...   xxx   xxx   xxx    xxx
> >(Actual payload)  yyy   yyy   yyy    yyy

Yes, that looks right (for the specific case of Ethernet MTU), with the
qualification that "any options" could by IPv4 options, IPv6 extension
headers, and/or TCP options.

Steve