divert and deadlock issues
Bruce M. Simpson
bms at incunabulum.net
Tue Jul 31 22:25:22 UTC 2007
Christian S.J. Peron wrote:
>> I can't think of a reason why a user would wish to supply any multicast
>> socket options to a divert socket, other than the 'small' ones, i.e.
> Why would these options ever be set on the divert socket itself though?
> To me it would make sense if these options were set on the network
> socket that originally sent the multicast packet itself.
They shouldn't be necessary, however I can foresee situations where
someone might well want to redirect multicast datagrams traversing an
IPPROTO_DIVERT socket, by using these socket options. [Recall that
FreeBSD's IPv4 stack currently uses the destination address as the sole
primary key for lookups in the forwarding information base's radix trie.]
This is however very unlikely, so my last suggestion, that multicast
options be deprecated or forbidden for IPPROTO_DIVERT sockets, stands.
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