fwiw, same request with the fix above applied produces:
$ openstack subnet create --network net1 --ip-version 6 --subnet-range 2001:db8:0:1::/64 --gateway 2001:db8:0:1:1:1:1:1/128 subnet1 BadRequestException: 400: Client Error for url: https://10.30.19.81:9696/v2.0/subnets, Invalid input for gateway_ip. Reason: '2001:db8:0:1:1:1:1:1/128' is not a valid IP address.
fwiw, same request with the fix above applied produces:
$ openstack subnet create --network net1 --ip-version 6 --subnet-range 2001:db8:0:1::/64 --gateway 2001:db8: 0:1:1:1: 1:1/128 subnet1 tion: 400: Client Error for url: https:/ /10.30. 19.81:9696/ v2.0/subnets, Invalid input for gateway_ip. Reason: '2001:db8: 0:1:1:1: 1:1/128' is not a valid IP address.
BadRequestExcep