** Description changed:
+ [impact]
+
When starting/using `dhclient`, it will often return an error such as:
- cmp: EOF on /tmp/tmp.yCyV6zBzhB which is empty
+ cmp: EOF on /tmp/tmp.yCyV6zBzhB which is empty
+
+ [test case]
+
+ run dhclient for the first time (for the current boot) on a bionic/focal
+ system, or remove the file(s) in /run/systemd/resolved.conf.d/ starting
+ with 'isc-dhcp-*', and then run dhclient.
+
+ [regression potential]
+
+ any regression would likely cause the DNS configuration that dhclient
+ gets to not be properly reported to systemd-resolved, resulting in
+ problematic/broken systemd DNS resolution.
+
+ [scope]
+
+ this is needed in b/f
+
+ this hook was removed from systemd starting in g, and the hook was not
+ yet added in x, so this change is needed only in b and f.
+
+ [original description]
+
+ When starting/using `dhclient`, it will often return an error such as:
+
+ cmp: EOF on /tmp/tmp.yCyV6zBzhB which is empty
This is due to the use of `cmp` in "/etc/dhcp/dhclient-enter-
hooks.d/resolved"
Because the $oldstate file can be empty, or different, it should use
`cmp --quiet`
This happens when "/run/systemd/resolved.conf.d/isc-
dhcp-v*-$interface.conf" files do not exist, or when the content
changes.
This is very loosely related to
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1805183
** Changed in: systemd (Ubuntu)
Status: Confirmed => Fix Released
** Changed in: systemd (Ubuntu Bionic)
Assignee: (unassigned) => Dan Streetman (ddstreet)
** Changed in: systemd (Ubuntu Focal)
Assignee: (unassigned) => Dan Streetman (ddstreet)
** Changed in: systemd (Ubuntu Bionic)
Importance: Undecided => Medium
** Changed in: systemd (Ubuntu Focal)
Importance: Undecided => Low
** Changed in: systemd (Ubuntu Bionic)
Importance: Medium => Low
** Changed in: systemd (Ubuntu Bionic)
Status: New => In Progress
** Changed in: systemd (Ubuntu Focal)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1878955
Title:
resolved dhclient-enter-hook complains about an empty file
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