Windows SP2 firewall: Famous for 3 seconds?

[Sebastian Niehaus <killedbythoughts () mindcrime net>]

[...]

| What existing functionality is changing in Service Pack 2 for Windows
| XP?
| 
| 
| Enhanced multicast and broadcast support
| 
| Detailed description
| 
| Multicast and broadcast network traffic differ from unicast traffic
| because the response comes from an unknown host. As such, stateful
| filtering prevents the response from being accepted. This stops a
| number of scenarios from working, ranging from streaming media to
| discovery.
| 
| 
| To enable these scenarios, Windows Firewall will allow a unicast
| response for 3 seconds from any source address on the same port from
| which the multicast or broadcast traffic originated.

Sounds like a broken concept, as always. Eh?

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