I have CentOS 8 LXD container configured with routed interface. LXD is installed via snap on Debian 10 host machine.
lxc init images:centos/8 c1
lxc config device add c1 eth0 nic nictype=routed parent=eth0 ipv4.address=138.*.16.151
/snap/bin/lxc list
+----------+---------+-----------------------+------+-----------+-----------+
| NAME | STATE | IPV4 | IPV6 | TYPE | SNAPSHOTS |
+----------+---------+-----------------------+------+-----------+-----------+
| c1 | RUNNING | 138.201.16.151 (eth0) | | CONTAINER | 0 |
+----------+---------+-----------------------+------+-----------+-----------+
According to this post
Routed notwork is not working with Centos 7 now [from the box] I have added the file route-eth0 inside /etc/sysconfig/network-scripts
So from container I can ping the LXD interface:
ping 169.254.0.1 PING 169.254.0.1 (169.254.0.1) 56(84) bytes of data. 64 bytes from 169.254.0.1: icmp_seq=1 ttl=64 time=0.026 ms
However pinging google is not possible:
ping google.com ping: google.com: Name or service not known
Routes (cmd executed inside container):
ip r default via 169.254.0.1 dev eth0 proto static metric 100 169.254.0.1 dev eth0 proto static scope link metric 100
ifcfg:
cat /etc/sysconfig/network-scripts/ifcfg-eth0 TYPE=Ethernet DEVICE=eth0 NAME=eth0 BOOTPROTO=none <--- changed to "none" from "static" according to the post linked above ONBOOT=yes IPADDR=138.*.16.151 PREFIX=32 IPV6INIT=no MTU=
cat /etc/sysconfig/network-scripts/route-eth0 169.254.0.1/128 dev eth0 default via 169.254.0.1 dev eth0