Comment 10 for bug 529495

How does ADC protocol specify "passive" mode? Because it doesn't send neither TCP4 nor UDP4, so everything should work correctly although I4/U4 are defined (U4 shouldn't be specified, so it's bug, but I4 is needed for NAT Traversal). Also client specifies UDP passive as !supports(AdcHub::UDP4_FEATURE), so it looks to me more as bug in hubsoft if it takes client with U4 but no UDP4 support as active one.