• Broadcast addresses

    From herrmannsfeldt@gmail.com@21:1/5 to Barry Margolin on Fri Jan 13 17:06:44 2017
    On Wednesday, November 9, 2016 at 8:51:39 AM UTC-8, Barry Margolin wrote:
    In article <5b266ef3-4ac0-4cee-8e48-433937930ec9@googlegroups.com>,

    (I wrote)
    I am still working on booting diskless Suns.

    Are hosts supposed to accept and respond to UDP requests to 255.255.255.255?

    It seems to me that FreeBSD and Linux don't, but OS X does.

    (snip)

    This is called the "limited broadcast address." RFC 1122 Section 3.3.6
    says that all hosts MUST recognize it, and says that this is the address
    that SHOULD be used when sending a broadcast.

    Does it matter which address the server binds?

    Seems to me that ANYADDR should work, but one reference
    I find says that it should bind to 255.255.255.255.

    The bind is done inside the rpc routines, and not by me.

    I did try setting SO_BROADCAST on it, even though that is
    only supposed to be for clients (senders), but that didn't help.

    thanks.

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