Comment 2 for bug 1222377

I have not determined if the fault occurs after 10^15 or 2^30 bytes, but the former seems more probable. Perhaps the code does something like read from /sys/class/net/eth0/statistics/{rx,tx}_bytes into a 16 byte buffer, which would fail at 10^15. But a quick look through the network-manager source didn't turn up anything like that.

I'll provide the ifconfig output once the problem happens again.