[FIXED] Realtek RTL8111/8168/8411 flapping on high transfer rates

[kauedg]

I've had some issues with the "re0: watchdog timeout" error that happens with RTL8111/8168/8411 adapters (realtek-re-kmod drivers) and this is how I fixed:

1. Create a jail (let's call it 'gcc')
2. Enter the jail (as root user)
# iocage console gcc

3. Get FreeBSD sources and ports repos, compile and install
# pkg install -y git gcc
# sh
# git clone -o freebsd -b releng/$(uname -r | cut -d'-' -f1,1) https://git.FreeBSD.org/src.git /usr/src
# git clone -o freebsd https://git.freebsd.org/ports.git /usr/ports
# cd /usr/ports/net/realtek-re-kmod/
# make install

4. Exit the jail
# exit
# exit
yeah, one from the sh shell and another from the csh shell

5. Backup and copy modules
# cp /boot/modules/if_re.ko /root/if_re.ko.bkp
# cp /mnt/[pool name]/iocage/jails/gcc/root/boot/modules/if_re.ko /boot/modules/

or, alternatively

# cp /mnt/[pool name]/iocage/jails/gcc/root/usr/ports/net/realtek-re-kmod/work/stage/boot/modules/if_re.ko /boot/modules/

6. On the GUI, go to System -> Tunables and add these:
variable: if_re_load
value: YES

variable: if_re_name
value: /boot/modules/if_re.ko

7. Reboot

This is the graph from a file transfer that used to make my interface flap and go down:

Source: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=166724#c93

 

[somethingweird]

nice - but *might* have to rebuild the driver - after update of CORE

 

[kauedg]

nice - but *might* have to rebuild the driver - after update of CORE

Sure, it's just a workaround but... maybe could replace the regular package?

Just left this guide to help others with similar issues and future reference for myself.

 

[das1996]

Does this updated driver help any with wol function? Have a rtl8125, but setting wol via ifconfig has no effect. Same nic, setting wol flag via ethtool on debian/scale works just fine.

 

[Ericloewe]

This is for the 1GbE alphabet soup of Realtek NICs, not 2.5GbE

 

[das1996]

^^The rtl8125 uses the same driver - if_re.ko. Thought perhaps i'd get lucky.