Comment 1 for bug 1914037

The cidrs from one of the example really ovrlap:
Bad router request: Cidr 2001:db8::/64 of subnet 417e4c02-8b8a-4b89-bee2-32d35dc61b93 overlaps with cidr 2001:db8::/64 of subnet 56123648-b56d-486c-8919-a3e97802906f.'

One solution could be to use addressscopes in tempest perhaps.