I'm seeing an issue where my Realtek ethernet NIC will occasionally drop pings to the gateway. I have isolated the issue to my PC by using other PCs to test the link without issue. The connection is rock solid normally, but every 5-10 minutes, the machine will lose connectivity for about 15-30 seconds. During this time, the routing table remains unchanged and Ubuntu never reports the interface as down. Pings are failing the whole time. Any thoughts?

Ubuntu 16.04

Hardware:

• Ethernet controller: Realtek Semiconductor Co., Ltd.
  RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0a)

output of: ethtool -i enp4s0f2

driver: r8168

version: 8.041.00-NAPI

firmware-version: 

expansion-rom-version: 

bus-info: 0000:04:00.2

supports-statistics: yes

supports-test: no

supports-eeprom-access: no

supports-register-dump: yes

supports-priv-flags: no