Disable ipv6 as workaround

https://sd.suse.com/servicedesk/customer/portal/1/SD-135489

lib/containers/common.pm

@@ -295,6 +295,9 @@ sub check_containers_connectivity {
     record_info "connectivity", "Checking that containers can connect to the host, to each other and outside of the host";
     my $container_name = 'sut_container';
 
+    record_info 'https://sd.suse.com/servicedesk/customer/portal/1/SD-135489'
+    assert_script_run 'sysctl -w net.ipv6.conf.all.disable_ipv6=1';
+
     # Run container in the background (sleep for 30d because infinite is not supported by sleep in busybox)
     script_retry "$runtime pull " . registry_url('alpine'), retry => 3, delay => 120;
     assert_script_run "$runtime run -id --rm --name $container_name -p 1234:1234 " . registry_url('alpine') . " sleep 30d";