It shows the following error when trying to update or refresh using
zypper, but I can access these links from Google Chrome.
Timeout exceeded when accessing 'http://download.opensuse.org/debug/distribution/leap/42.3/repo/non-oss/content'
I've tried disabling the IPV6 in Yast and used
sysctl -w net.ipv6.conf.all.disable_ipv6=1
sysctl -w net.ipv6.conf.default.disable_ipv6=1
I also added the above lines to the /etc/sysctl.conf file. (I rebooted the system each time.)