Re: [lwip-users] PPP problems: IPCP (NOT) obsolete option

[Alain M.]

Maybe I have miss-interpreted that data:
FF 03 80 21 01 01 00 16  03 06 00 00 00 00 81 06 00 00 00 00 83 06 00 00
00 00 6E DB 7E

FF 03: PPP encapsulation
80 21: PPP protocol - IPCP
01:    IPCP code 01: Configure-Request
01:    IPCP identifier
00 16: length
03 06 00 00 00 00: IP address + length + IP=0
81 06 00 00 00 00: Primary DNS + length + IP=0
83 06 00 00 00 00: Decondary DNS + length + IP=0
6E DB: Frame Check Sequence (I did not calculate
7E:    Flag

This makes it all right, and makes me even more lost :(

Alain

> I managed (with Paulo Silva) to make the Linux port work with PPP (not 
> tap0). I got exactly to the point Fodor Peter got here: 
> http://www.mail-archive.com/address@hidden/msg03856.html
>
> I traced it to what appears to be that PPP has a part obsolete (?) The 
> last transmission that is not answered is the first IPCP message:
> FF 03 80 21 01 01 00 16  03 06 00 00 00 00 81 06 00 00 00 00 83 06 00 00 
>  00 00 6E DB 7E
>
> FF 03: PPP encapsulation
> 80 21: PPP protocol - IPCP
> 01:    IPCP code 01: Configure-Request
> 01:    IP-Addresses (deprecated)
>
> According to RFC 1332:
> The use of the Configuration Option IP-Addresses has been deprecated. 
> [...] This option SHOULD NOT be sent in a Configure-Request [...] 
> Support for this option MAY be removed ... and it is not even described 
> in the RFC !!!
>
> Did anyone come across this? Has someone implemented the newer IPCP 
> Configure Request option=03 that replaces this?
>
> Thanks for any help...
> Alain