Hello,
I´m seeing ethernet link problems with latest beta version. Not only loosing link on some interfaces (even in some interfaces that links 2 RB750 with 5.0rcX version, i see this problem in one side and not in the other side) but also detect link on some interfaces with nothing connected to them.
See ether 4 & 5 here... they are unplugged.
Regards,
marcelo