I'm kind of concerned about any non-declarative functionality here. For example, DHCP client and receiving/updating routes are all handled by netwokrd already.
You can bind a systemd unit to e.g. sys-subsystem-net-devices- eth0.device and then any number of systemd units should be started and stopped in concert. One can also block and wait until the relevant interface is up with /lib/systemd/systemd-networkd-wait-online --help However, I'd rather avoid running arbitrary code as all the examples provided at the moment can be achieve as specifications to the networkd units. (either as generated by netplan, or as drop-in snippets in /etc or /run). -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1664818 Title: Not possible to render pre-up, pre-down, post-up, or post-down snippets Status in netplan: New Status in systemd package in Ubuntu: Triaged Bug description: Many configurations require scripts to run before or after an interface comes up or down. Example: I had a situation where I needed to render a post-up script to monitor an interface with ifupdown (and with the interface set to manual mode, because if the link was down I didn't want to require DHCP to run before the system continued booting). This is similar to what NetworkManager does in order to launch (or kill) a DHCP client. Other use cases involve setting up custom routes (such as when complex logic involving metrics or source routing is required) or anything else the designers of the netplan rendering engine didn't think of, such as invoking workarounds or special settings required for a particular NIC or environment, iptables rules that should be added or removed, etc. A follow-on issue is, it should be possible to ask that custom scripts run if the *link* is detected to come up or down. But I'll be happy if netplan first can simply replicate the custom-script-invoking behavior of ifupdown. To manage notifications about this bug go to: https://bugs.launchpad.net/netplan/+bug/1664818/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
