I directly connect my Ubuntu 22.04 server to the router with 2 FC cables (bonding). The server and router will connect together with the subnet 10.27.28.5/30. I install my app in the container. I map this container with 1 IP public which set in the loopback interface.
Now I can ping to the IP public in loopback interface from the internet, but I cannot ping from the server to 8.8.8.8.
I still can traceroute to 8.8.8.8 with the source is the public IP although I cann't traceroute without source.
ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
^C
--- 8.8.8.8 ping statistics ---
5 packets transmitted, 0 received, 100% packet loss, time 4087ms
traceroute 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
1 _gateway (10.27.28.5) 1.602 ms 1.592 ms 1.609 ms
2 * * *
3 * * *
traceroute 8.8.8.8 -s
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
1 _gateway (10.27.28.5) 1.600 ms 1.790 ms 1.943 ms
2 10.52.226.145 (10.52.226.145) 1.425 ms 10.52.226.149 (10.52.226.149) 1.570 ms 1.566 ms
...
13 * * *
14 8.8.8.8 (8.8.8.8) 45.061 ms 45.418 ms 45.377 ms
I configure IP and routes by netplan
'# Let NetworkManager manage all devices on this system
network:
version: 2
renderer: NetworkManager
ethernets:
eno8403:
dhcp4: false
dhcp6: false
dhcp4-overrides:
use-routes: false
eno8303:
addresses: [10.52.17.251/29]
routes:
- to: 10.24.4.0/24
via: 10.52.17.249
- to: 10.24.5.0/24
via: 10.52.17.249
- to: 10.27.10.0/24
via: 10.52.17.249
- to: 10.27.11.0/24
via: 10.52.17.249
dhcp6: false
dhcp4: false
dhcp4-overrides:
use-routes: false
enp1s0f0np0:
dhcp4: false
enp1s0f1np1:
dhcp4: false
loop1:
renderer: networkd
dhcp4: false
dhcp6: false
addresses:
- *.*.*.*/32
dhcp4-overrides:
use-routes: false
bonds:
bond0:
interfaces: [enp1s0f0np0,enp1s0f1np1]
mtu: 9000
parameters:
mode: balance-rr
mii-monitor-interval: 100
addresses:
- 10.27.28.6/30
routes:
- to: default
via: 10.27.28.5
IP route table
default via 10.27.28.5 dev bond0 proto static metric 20300
10.24.4.0/24 via 10.52.17.249 dev eno8303 proto static metric 100
10.24.5.0/24 via 10.52.17.249 dev eno8303 proto static metric 100
10.27.10.0/24 via 10.52.17.249 dev eno8303 proto static metric 100
10.27.11.0/24 via 10.52.17.249 dev eno8303 proto static metric 100
10.27.28.4/30 dev bond0 proto kernel scope link src 10.27.28.6 metric 300
10.52.17.248/29 dev eno8303 proto kernel scope link src 10.52.17.251 metric 100
169.254.0.0/16 dev docker0 scope link metric 1000
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1
So how can I set default go to the internet with IP public. I check app can go to the internet but the server itself cannot, so I can update packet for it.
