repo

hi,
i try to install ypbind package.
zypper lr
# | Alias | Name | Enabled | GPG Check | Refresh
--+-------+------+---------+-----------+--------
1 | y | y | Yes | (r ) Yes | No
2 | y5 | y5 | Yes | (r ) Yes | No
where y ->repository under/y/SLE-12-SP1-Server-DVD-x86_643247/
y5->under /y5/SLE-12-SP1-Server-DVD-x86_643247/
in /y/SLE-12-SP1-Server-DVD-x86_643247/suse/x86_64/ ypbind is missing.
in /y5 ypbind is there.
zypper in ypbind
Loading repository data...
Reading installed packages...
Resolving package dependencies...

The following NEW package is going to be installed:
ypbind

1 new package to install.
Overall download size: 41.4 KiB. Already cached: 0 B. After the operation,
additional 78.5 KiB will be used.
Continue? [y/n/? shows all options] (y):
Retrieving package ypbind-1.37.2-3.6.x86_64
(1/1), 41.4 KiB ( 78.5 KiB unpacked)
File './suse/x86_64/ypbind-1.37.2-3.6.x86_64.rpm' not found on medium 'dir:///y/SLE-12-SP1-Server-DVD-x86_643247'

how should to inform zypper in to install from y5 repo?