Meaning of arp flag values

Discussion in 'Linux Networking' started by jeniffer, May 16, 2006.

  1. jeniffer

    jeniffer Guest

    The net/if_arp.h contains the arpreq structure as well it documents the
    following values of arp flags :

    /* ARP Flag values. */
    #define ATF_COM 0x02 /* Completed entry (ha valid).
    #define ATF_PERM 0x04 /* Permanent entry. */
    #define ATF_PUBL 0x08 /* Publish entry. */
    #define ATF_USETRAILERS 0x10 /* Has requested trailers. */
    #define ATF_NETMASK 0x20 /* Want to use a netmask (only
    for proxy entries). */
    #define ATF_DONTPUB 0x40 /* Don't answer this addresses.
    #define ATF_MAGIC 0x80 /* Automatically added entry.

    ATF_PERM is a static ARP entry and ATF_COM means a compled entry.
    What does a published arp entry mean(ATF_PUBL) ?Please tell more about
    the entries ATF_PUBL to ATF_MAGIC .
    jeniffer, May 16, 2006
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