Centos 7.6, интерфейс настраивал через nmcli просто указав адрес с подсетью и шлюз. Вывод nmcli:
[root@msk ~]# nmcli
eth0: connected to eth0
"Red Hat Virtio"
ethernet (virtio_net), 52:54:00:18:80:F7, hw, mtu 1500
ip4 default, ip6 default
inet4 194.113.107.147/32
route4 194.113.107.147/32
route4 194.113.107.129/32
route4 0.0.0.0/0
inet6 2a07:14c0:1:1810:550:5e4d:9634:1cf1/64
inet6 fe80::66ee:1640:67cc:5d0c/64
route6 2a07:14c0:1:1810::/64
route6 ff00::/8
route6 fe80::/64
route6 ::/0
lo: unmanaged
"lo"
loopback (unknown), 00:00:00:00:00:00, sw, mtu 65536
DNS configuration:
servers: 1.1.1.1
interface: eth0
Если написать ip -6 route, выходит что-то непонятное:
unreachable ::/96 dev lo metric 1024 error -113 pref medium
unreachable ::ffff:0.0.0.0/96 dev lo metric 1024 error -113 pref medium
unreachable 2002:a00::/24 dev lo metric 1024 error -113 pref medium
unreachable 2002:7f00::/24 dev lo metric 1024 error -113 pref medium
unreachable 2002:a9fe::/32 dev lo metric 1024 error -113 pref medium
unreachable 2002:ac10::/28 dev lo metric 1024 error -113 pref medium
unreachable 2002:c0a8::/32 dev lo metric 1024 error -113 pref medium
unreachable 2002:e000::/19 dev lo metric 1024 error -113 pref medium
2a07:14c0:1:1810::/64 dev eth0 proto kernel metric 100 pref medium
unreachable 3ffe:ffff::/32 dev lo metric 1024 error -113 pref medium
fe80::/64 dev eth0 proto kernel metric 100 pref medium
default via 2a07:14c0:1:1810::1 dev eth0 proto static metric 100 pref medium
