Justin Maggard 1b75093a43 ssdp: Allow SSDP M-SEARCH from other subnets ...

Based on a patch from SF user pasdVn <pasdVn3@gmx.de>.

Rely on the kernel to filter out multicasts from non-member interfaces.
Also get the address of the interface we received the multicast on using
sockopt IP_PKTINFO.

Closes: SF Patch ticket #77.

2015-09-08 15:49:22 -07:00

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