Re: [lwip-users] Etharp drops packets for unlisted arp entries

[K.J. Mansley]

On Wed, 2004-07-07 at 15:25, Masta Slader wrote:
> Hi!
> 
> Does LWIP implements IP Options (related to RFC 1122)?!? Is the "urgend
> data" mechanism included in TCP in LWIP?

I don't think so, but I'm not sure exactly what you're referring to. 
Some TCP options (such as MSS) are handled. Can you be more specific?

The listed IP Options in RFC 1122 are as follows:

                                                 |        | | | |S| |
                                                 |        | | | |H| |F
                                                 |        | | | |O|M|o
                                                 |        | |S| |U|U|o
                                                 |        | |H| |L|S|t
                                                 |        |M|O| |D|T|n
                                                 |        |U|U|M| | |o
                                                 |        |S|L|A|N|N|t
                                                 |        |T|D|Y|O|O|t
FEATURE                                          |SECTION | | | |T|T|e
-------------------------------------------------|--------|-|-|-|-|-|--
IP Options                                       |        | | | | | |
  Ignore options TCP doesn't understand          |4.2.3.8 |x| | | | |
  Time Stamp support                             |4.2.3.8 | | |x| | |
  Record Route support                           |4.2.3.8 | | |x| | |
  Source Route:                                  |        | | | | | |
    ALP can specify                              |4.2.3.8 |x| | | | |1
      Overrides src rt in datagram               |4.2.3.8 |x| | | | |
    Build return route from src rt               |4.2.3.8 |x| | | | |
    Later src route overrides                    |4.2.3.8 | |x| | | |


Thanks

Kieran