Realtek PCIe FE / GBE / 2.5G / 5G Ethernet Family Controller
kernel driver.

This is the official driver from Realtek with a few patches to
improve stability and performance. It can be loaded instead of
the FreeBSD driver built into the GENERIC kernel if you experience
issues with it (eg. watchdog timeouts), or your card is not supported.

Supported devices:

* 5G Gigabit Ethernet
  - RTL8126

* 2.5G Gigabit Ethernet
  - RTL8125 / RTL8125B(G)

* 10/100/1000M Gigabit Ethernet
  - RTL8111B / RTL8111C / RTL8111D / RTL8111E / RTL8111F / RTL8111G
    RTL8111H / RTL8118(A) / RTL8119i / RTL8111L / RTL8111K
  - RTL8168B / RTL8168E / RTL8168H
  - RTL8111DP / RTL8111EP(P) / RTL8111FP
  - RTL8411 / RTL8411B

* 10/100M Fast Ethernet
  - RTL8101E / RTL8102E / RTL8103E / RTL8105E / RTL8106E / RTL8107E
  - RTL8401 / RTL8402

See also: https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-pci-express-software