Hello!
I had the same issue. Disabling TSO and GSO fixed it. No network hangs since!
Motherboard: ASUS Z97-A
Driver: e1000e
Immediate fix:
ethtool -K nic0 tso off gso off
To make it persistent after reboot:
Edit /etc/network/interfaces and add:
iface nic0 inet manual
post-up...