No IPv6 support. I monitored the traffic coming from the TV, it does DHCP to get an address, checks for firmware updates (if enabled) and that's it. No other traffic unless I take some specific action to generate some.
It's true that I can't be 100% sure it is secure or not spying, but Bored@Work claimed LG like monitoring and security vulnerabilities. I presented some evidence that his first claim is false, and asked for some proof of his second claim to which he has offered nothing. The onus is on him to substantiate his claims.
+1 for LG, although this is not a bullet proof statement like NSA stuff. Own a late 2013 LG smart tv here too, there was an incident that it was leaking tons of infos to the net, and it was blew up in the press world wide while ago. But now they've fixed it, and the fix was released & delivered really fast since it was discovered. I think in the matter of days if I'm not mistaken.
I own a sniffer running at 24/7, and from the log its now "fixed" as mojo-chan's.