Postfix fails to start with:

Mar 15 05:29:14 adularia postfix/master[9632]: fatal: 0.0.0.0:smtp: Servname
not supported for ai_socktype
Mar 15 05:29:15 adularia postfix/master[9631]: fatal: daemon initialization
failure

This is due to missing /etc/services:

# ls -al /etc/services
ls: cannot access '/etc/services': No such file or directory
# ls -al /usr/etc/services
-rw-r--r-- 1 root root 868252 Feb  6 12:16 /usr/etc/services

Which was moved to /usr as part of
https://kubic.opensuse.org/blog/2019-12-05-usr-etc/

Host: Tumbleweed Server
openSUSE-release-20200312-486.1.x86_64


The following workaround is viable:

ln -s /usr/etc/services /etc/services

��� postfix.service - Postfix Mail Transport Agent
     Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor
preset: enabled)
     Active: active (running) since Sun 2020-03-15 05:34:45 UTC; 5s ago

Bug ID	1166680
Summary	Postfix fails to start - missing /etc/services
Classification	openSUSE
Product	openSUSE Tumbleweed
Version	Current
Hardware	Other
OS	Other
Status	NEW
Severity	Normal
Priority	P5 - None
Component	Basesystem
Assignee	screening-team-bugs@suse.de
Reporter	william.brown@suse.com
QA Contact	qa-bugs@suse.de
Found By	---
Blocker	---