[PATCH 1/1] ws2_32: Selectively bind UDP sockets to interfaces while still allowing broadcast packets (try 2, resend).

[Erich E. Hoover]

Real Name:
    Erich Hoover

Description:
    I know it's been quite a while, but I'm back with another solution
for Bug #7929 (broadcast packets on a socket bound to a specific
interface).  This patch uses SO_BINDTODEVICE in order to bind a
socket to a specific interface while still allowing broadcast packets
(a Linux-only feature).  While this feature normally requires root
privileges, it can also be enabled by giving wine-preloader the
CAP_NET_RAW capability.  Should insufficient permissions be available,
the patch outputs an appropriate error message notifying the user that
broadcast packets will not function properly.
    Marcus Meissner's mentioned that no sane distributor will enable
CAP_NET_RAW on the preloader.  I don't feel that this is necessary for
the inclusion of this patch.  In my mind this falls under the same
category as ICMP and raw socket creation (two other features requiring
CAP_NET_RAW).  So, if an end-users wants/needs this feature then they
will need to enable it themselves.

Changelog:
    ws2_32: Selectively bind UDP sockets to interfaces while still
allowing broadcast packets.
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