I am running ubuntu 18.04.2 LTS. After latest update, I do not have internet. I even have no ethernet option in Network Manager. Ifconfig -a gives me just lo interface. Between updating and restarting computer I changed kernel from linux-image-4.15.0-43-generic to linux-image-4.15.0-45-generic.
lspci -v
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 02)
Subsystem: Gigabyte Technology Co., Ltd Onboard Ethernet
Flags: bus master, fast devsel, latency 0, IRQ 10, NUMA node 0
I/O ports at de00 [size=256]
Memory at fdbff000 (64-bit, prefetchable) [size=4K]
Memory at fdbe0000 (64-bit, prefetchable) [size=64K]
[virtual] Expansion ROM at fde00000 [disabled] [size=64K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/2 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 01
Capabilities: [b0] MSI-X: Enable- Count=2 Masked-
Capabilities: [d0] Vital Product Data
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 12-34-56-78-12-34-56-78
lshw -C network
*-network UNCLAIMED
description: Ethernet controller
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
version: 02
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list
configuration: latency=0
resources: ioport:de00(size=256) memory:fdbff000-fdbfffff memory:fdbe0000-fdbeffff memory:fde00000-fde0ffff
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