I will try, currently im on mainline kernel and networking works. lspci -v shows this
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 16)
DeviceName: Broadcom 5762
Subsystem: Gigabyte Technology Co., Ltd Onboard Ethernet
Flags: bus master, fast devsel, latency 0, IRQ 58
I/O ports at f000 [size=256]
Memory at fcc04000 (64-bit, non-prefetchable) [size=4K]
Memory at fcc00000 (64-bit, non-prefetchable) [size=16K]
Capabilities:
Kernel driver in use: r8168
Kernel modules: r8169, r8168
EDIT: after a reboot, i found out that linux-zen and my custom tkg kernel are loading the r8169 kernel driver instead of the r8168 one