I am having an issue where eth1 is throwing some messages and stops responding. Restarting networking doesn’t work and also just bringing down eth1 with ‘ifdown’ doesn’t fix it. I have never seen anything like these messages:

eth1: no IPv6 routers present r8169 0000:03:00.0: eth1: rtl_counters_cond == 1 (loop: 1000, delay: 10). r8169 0000:03:00.0: eth1: rtl_chipcmd_cond == 1 (loop: 100, delay: 100). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: rtl_phy_reset_cond == 1 (loop: 100, delay: 1). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: rtl_phyar_cond == 1 (loop: 20, delay: 25). r8169 0000:03:00.0: eth1: link up

[root@mail jtsm]# lspci | grep -i net
02:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 01)

DEVICE=eth1
HWADDR:0A:CD:17:07:7E
TYPE=Ethernet UUID