Comment # 2 on bug 1227351 from Nick Dordea

The issue is solved ...

sudo ZYPP_MULTICURL=0 zypper up -l --details --no-allow-vendor-change
...
Retrieving repository 'Main Update Repository' metadata
...........................................................[done]
Building repository 'Main Update Repository' cache
...........................................................[done]
Loading repository data...
Reading installed packages...
.....
Thank you for the quick resolution .

ND