Comment 18 for bug 1815101

@ed,

I just finished the backport to Eoan it was straightforward, I'll finish tests tomorrow with HA related software and networkd enabled HA clusters. After that I'll give you a better estimation about Disco and Bionic.

This is the total size of changes (systemd-networkd-tests.py is not so great to backport, will review that):

$ cat *.patch | diffstat
 man/systemd.network.xml | 27 +-
 src/network/networkd-dhcp4.c | 8
 src/network/networkd-link.c | 57 +++++-
 src/network/networkd-link.h | 2
 src/network/networkd-manager.c | 2
 src/network/networkd-network-gperf.gperf | 3
 src/network/networkd-network.c | 44 ++++
 src/network/networkd-network.h | 26 ++
 test/fuzz/fuzz-network-parser/directives.network | 1
 test/test-network/conf/24-keep-configuration-static.network | 5
 test/test-network/conf/dhcp-client-keep-configuration-dhcp-on-stop.network | 4
 test/test-network/conf/dhcp-client-keep-configuration-dhcp.network | 7
 test/test-network/systemd-networkd-tests.py | 94 +++++++++-
 13 files changed, 235 insertions(+), 45 deletions(-)

Good thing is that the logic is not drastically changed for this feature to exist. Sorry for the delay here, because of freeze we were running to close out some urgent issues for Eoan.