Configure two network cards

[pat0x0]

Hello! I've been trying for hours and still can't find the right option.
I'm running Minix3.4 RC6 on VMware Cloud Director and everything is working like a charm, except for something that for sure is my error in the configuration:
I have configured 2 network cards, one with internet access (10.X.X.X) and the other only for internal use (172.16.X.X). When I put the one that has internet access as the main one, absolutely everything works, WAN and LAN, but when I do it the other way around, the one for internal use as the main one, I can only ping the LAN, without an internet connection.
Is there any way to fix this? I am sure it is a problem of a bad configuration and not of Minix. Thanks!

[pat0x0]

UPDATE:
I just tried using ifconfig metrics and it doesn't work either... This learning got interesting 🥲

[petershh]

Hello,
How did you configure these cards in Cloud Director (is it NAT, or bridged network, or whatever)?

[pat0x0]

Hello Peter! The cards are configured in NAT. Unfortunately my provider does not offer me more options.

[petershh]

Did you try to reconfigure interfaces from scratch? You might need to reboot the system.

[pat0x0]

Yes, I deleted them and reconfigured them from scratch, then restart the network service and it's the same. I also deleted them again, reconfiguring everything from scratch, but this time restarting minix and I got the same result.
But there is something that catches my attention: when I run the command to define the metric:

ifconfig emX metric n

the command shows no errors, however when I look at the interface file in /etc/ifconfig.emX, it makes no mention of the metric. Shouldn't it be defined within the file?

[pat0x0]

I answer to myself: yes, it is misconfigured. You have to add the metric manually to the file idiot!!!.
Well, I did, I restarted the server and...

#ping google.com
ping: Cannot resolve "google.com" (Host name lookup failure)

But no, it's not that because the resolv.conf is well configured

[petershh]

Don't call yourself an idiot. I think that command should set specified metric, and I'll investigate that later.

Can you ping, for example, 1.1.1.1?

[pat0x0]

Ping does not resolve neither by domain nor by IP, except for the IP range configured with the other card.
It's weird... I'm starting to believe it's more of a VMware issue than Minix