reload kernel ethernet card module

I don’t know if this works for all modules.

I have a problem with my ethernet card module r8169 for

04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)

It seems to stall or crash. So I do (as root)

rmmod r8169
modprobe r8169

And subsequently restart my network. In Slackware that is (as root)

/etc/rc.d/inet1 restart

Network up again. For now. What’s wrong with the driver/module? I tried a more recent one, same problem. Sigh.