[07:37] Hi. Could someone help me with netplan on Ubuntu? [07:51] JohnWick: Hi :). Your best bet would be to simply ask what you're looking for, as even if we're not able to help you directly we might at least point you in the right direction. [07:55] I have a conf like this https://pastebin.com/NvLMKmfL and net.ipv4.ip_forward=1. It worked fine untill reboot. After reboot I'm no longer able to reach 10.5.17.0/24 from other PC in 10.5.0.0/22 [07:56] JohnWick: any logs from either netplan or systemd-networkd? [07:58] At first glance I don't see anything wrong with your configuration :/ [07:58] Except perhaps the optional: true ? [08:00] Are you sure your second interface is up? [08:00] (`ip l` should give you its status) [08:02] Yes, it's up. I'm able to reach 10.5.7.0/24 from this server