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Options field in Outer IP Header



Hi,

    This is regarding the Options field in the outer IP Header for IPsec
Tunnel mode.
    In RFC2401, section 5.1.2.1 gives the Header construction for Tunnel
mode. For the Options field, the following line has been printed.

Header fields    Outer Header                Inner Header
Options            never copied                 no change

I have a doubt. Does this mean:
1> IPsec never copies the Options field from the inner Header nor
    does it construct them for the Outer Header ?
2> IPsec always attaches an outer IP Header of 20 bytes ?
3> It is not the responsibility of IPsec to attach the Options field for the
    Outer IP header ?

I would be really thankful if you could help me with this.

Thanks and Regards,
Amol.