Bug#935920: Upgrade from stretch to buster removes /etc/network/if-up.d/
Package: openssh-server
Version: 1:7.9p1-10
After upgrading from stretch to buster, I noticed that the DHCP client
(isc-dhcp-client, 4.4.1-2) exits after initially assigning an IP
address. Further investigation showed, that "ifup@ens3.service" exited
abnormally. The reason for this seems to be that the directory
"/etc/network/if-up.d" is missing.
As I keep my /etc under git control (using etckeeper), I was able to
identify the removal of of "/etc/network/if-up.d/openssh-server" as the
last action taking place which at least involved files in the if-up.d
directory. On this machine, openssh-server was the only file in
/etc/network/if-up.d, so I suppose that some script executed during the
installation/upgrade of openssh-server removed the complete directory.
Recreating the directory resolves the issue and "ifup@ens3.service"
works and terminates properly.
The following is the output obtained from systemctl status:
ifup@ens3.service - ifup for ens3
Loaded: loaded (/lib/systemd/system/ifup@.service; static; vendor
preset: enabled)
Active: failed (Result: exit-code) since Tue 2019-08-27 21:18:51
CEST; 9s ago
Process: 6510 ExecStart=/bin/sh -ec ifup --allow=hotplug ens3; ifquery
--state ens3 (code=exited, status=1/FAILURE)
Main PID: 6510 (code=exited, status=1/FAILURE)
Aug 27 21:18:51 hostname sh[6510]: DHCPREQUEST for 10.X.X.X on ens3 to
255.255.255.255 port 67
Aug 27 21:18:51 hostname dhclient[6518]: DHCPREQUEST for 10.X.X.X on
ens3 to 255.255.255.255 port 67
Aug 27 21:18:51 hostname dhclient[6518]: DHCPACK of 10.X.X.X from 10.X.X.X
Aug 27 21:18:51 hostname sh[6510]: DHCPACK of 10.X.X.X from 10.X.X.X
Aug 27 21:18:51 hostname dhclient[6518]: bound to 10.X.X.X -- renewal in
3089 seconds.
Aug 27 21:18:51 hostname sh[6510]: bound to 10.X.X.X -- renewal in 3089
seconds.
Aug 27 21:18:51 hostname sh[6510]: run-parts: failed to open directory
/etc/network/if-up.d: No such file or directory
Aug 27 21:18:51 hostname sh[6510]: ifup: failed to bring up ens3
Aug 27 21:18:51 hostname systemd[1]: ifup@ens3.service: Main process
exited, code=exited, status=1/FAILURE
Aug 27 21:18:51 hostname systemd[1]: ifup@ens3.service: Failed with
result 'exit-code'.
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