Comment 3 for bug 2028023

Found that the issue can be fixed by this commit in upstream

"""
commit 26591ffffd62c62796b1f65146648022d68e1279
Author: Yu Watanabe <email address hidden>
Date: Sun Nov 14 15:46:47 2021 +0900

    resolve: do not clear DNS servers or friends on link which is not managed by networkd

    When networkd detects an unmanaged link, then the state is changed in
    the following order:
    pending -> initialized -> unmanaged

    The "initialized" state was added by bd08ce56156751d58584a44e766ef61340cdae2d.

diff --git a/src/resolve/resolved-link.c b/src/resolve/resolved-link.c
index 18dc3d29e9..dd219f297c 100644
--- a/src/resolve/resolved-link.c
+++ b/src/resolve/resolved-link.c
@@ -565,7 +565,7 @@ static int link_is_managed(Link *l) {
         if (r < 0)
                 return r;

- return !STR_IN_SET(state, "pending", "unmanaged");
+ return !STR_IN_SET(state, "pending", "initialized", "unmanaged");
 }

 static void link_read_settings(Link *l) {

"""