I found by accident a non-updating grommunio-imapsync as depencies are not met.
server:~ # zypper up
Loading repository data...
Reading installed packages...
The following package update will NOT be installed:
grommunio-imapsync
Nothing to do.
server:~ # zypper up grommunio-imapsync
Loading repository data...
Reading installed packages...
Resolving package dependencies...
Problem: 1: nothing provides 'perl(IO::Socket::INET6)' needed by the to be installed grommunio-imapsync-2.314-lp160.1.1.noarch
Solution 1: do not install grommunio-imapsync-2.314-lp160.1.1.noarch
Solution 2: break grommunio-imapsync-2.314-lp160.1.1.noarch by ignoring some of its dependencies
Choose from above solutions by number or cancel [1/2/c/d/?] (c):
There is now official perl-IO-Socket-INET6 package, just a dev-package and a community-package.
Any suggestions?