UDP Multicast primitive on cRIO-9068

[kwkengineer]

Is there an issue using multicast on NI RT Linux?  I get "generic error 42" on the UDP Multicast Open using the Read/Write version.  If there is an issue can anyone suggest an alternative?

Thanks,
Kevin

[BradM]

kwkengineer, since this is an issue that is showing up using all NI software on the 9068, the NI forums seem like the better place to ask this question: forums.ni.com

[kwkengineer]

True.  I did put this question in the wrong place...however just this very moment it looks like I found the problem.

The example doesn't use the "net address" input on the multicast open.  On my 9068 I only use one of the Eth ports.  Without the net address input the Open tries to open on all Eth ports and since one of mine is unconfigured...I get errors.