ipaddress: IPv6Network.exploded fails for networks with a scope ID #161384

Bug report

After gh-88178, .exploded works for a scoped IPv6Address, but a scoped IPv6Network still fails:

>>> import ipaddress
>>> n = ipaddress.IPv6Network('fe80::%eth0/64')
>>> str(n)
'fe80::%eth0/64'
>>> n.exploded
ipaddress.AddressValueError: Only hex digits permitted in '%eth0' in 'fe80::%eth0'

I'd expect 'fe80:0000:0000:0000:0000:0000:0000:0000%eth0/64'.

The network branch of _BaseV6._explode_shorthand_ip_string still re-parses str(self.network_address),
which includes the %scope. Building the hex from int(self.network_address) and appending the scope, like the
address branch, fixes it. I'm happy to send a PR with a test.

CPython versions tested on:

3.13, 3.14, CPython main branch

Operating systems tested on:

Linux

Linked PRs

• gh-161384: Fix IPv6Network.exploded for networks with a scope ID #161398