CentOS 7 with NatNetwork and Host-Only Network Routing Issue

[Adam M.]

Hi,

I currently have an issue with CentOS guests, with the following config:

enp0s3 - NatN etwork connection with DHCP (NatNetwork)
enp0s8 - Host-Only connection with static addressing on 172.16.0.x (vboxnet0).

At boot time the VM is unable to access the internet with the NatNetwork.

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ip route show

shows:

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default via 172.16.0.1 dev enp0s8  proto static  metric 100 
default via 192.168.55.1 dev enp0s3  proto static  metric 101 
172.16.0.1 dev enp0s8  proto static  scope link  metric 100 
192.168.55.0/24 dev enp0s3  proto kernel  scope link  src 192.168.55.5  metric 100

If I then do

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systemctl restart network

this changes to:

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default via 192.168.55.1 dev enp0s3  proto static  metric 100 
default via 172.16.0.1 dev enp0s8  proto static  metric 101 
172.16.0.1 dev enp0s8  proto static  scope link  metric 100 
192.168.55.0/24 dev enp0s3  proto kernel  scope link  src 192.168.55.5  metric 100

And the VM can access the internet.

Is there any way I can have this the "on boot" condition?

Thanks,

Adam M.

[Adam M.]

Ok, so I finally fixed this.

In nmtui for enp0s8 I checked the "Never use this network for default route" and then in /etc/sysconfig/network-scripts I created a route-enp0s8 file with:

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172.16.0.1 dev enp0s8

And everything works