Database error when receiving IPv6 with scope-id

[sevdog]

When receiving an IPv6 there could be a "scope-id" part which is handled and validated by python stdlib.

However the string representation of this kind of value is not valid when used in postgres (see examples in RFC-4007 which raises an error

invalid input syntax for type inet: "fe80::1234%ne0"

Thus the db-prep value should not be the str representation of IPv6 addresses.

[sevdog]

Internally django uses ipaddresse to validate IPv6 and uses a hack to remove the scope-id part:

https://github.com/django/django/blame/7e41a7a47d0ee3e2d8270b04afbb908ece0b2b77/django/utils/ipv6.py#L27