Question
[FreeBSD] Lost networking after reboot
- Posted on November 16, 2020
- FreeBSDNetworking
Asked by sremick
So I was going to do update a droplet from FreeBSD 12.1 to 12.2. As a precaution, I shut down the droplet first to do an offline snapshot. Upon rebooting the droplet, I no longer have any network. vtnet0 is “active” but doesn’t have an IP4 address, certainly not the one that DO says is assigned to the droplet. I can’t ping the IP from the outside, nor can I ping anything (8.8.8.8, etc) from inside the droplet.
It’s important to note that I have yet to make any changes at this point. All that has happened was the reboot and snapshot.
I found old posts referencing a /etc/rc.digitalocean.d directory with the network .conf file symlink but I don’t have such a directory. But I don’t know if this is current info as the posts were 4 years old.
Any thoughts?
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I spent ages messing around with this and eventually it was quite a simple fix so I thought I better share.
For some reason the variables didnt load into the script so the box booted up with no ip addresses.
I hadn’t done an upgrade, I was just finishing off a fresh build. Unfortunately I dont know what caused it! But for whatever reason, that was the effect - no connectivity to or from the box at all.
Solution that worked for me was to console onto the box then:
I then rebooted to test and the settings stuck :)
Good luck to whoever next stumbles on this.
You can hardcode the IP address information in /etc/rc.conf to confirm connectivity and then troubleshoot digital ocean’s dynamic ip allocation.
Pull up the networking information from DigitalOcean Website/Droplets/Droplet name/Networking. There you will see, Public IPV4 Address, Public Gateway, and Subnet Mask
in /etc/rc.conf set: defaultrouter=“[ip address of gateway]” ifconfig_vtnet0=“inet [ip address] net mask [subnet mask]”
reboot or run /etc/netstart restart
If that works, create a new FreeBSD 12.2 droplet and take a look at its config. You can copy these files: /usr/local/etc/rc.d/digitalocean /usr/local/etc/rc.d/digitaloceanpre
and make sure that /etc/rc.conf digitaloceanpre=“YES” digitalocean=“YES” cloudinit_enable=“YES”
Finally, if still not working, check the default packages in the new droplet with: pkg info
and make sure those exist in your existing droplet.