ipcheck: Test all special-purpose address ranges

I was going through [1] and [2] earlier today and when running ipcheck
now I realized the previous input.txt wasn't quite cutting it – some
special-purpose ranges were just missing the file.

I figured I'd shared the changes so that this isn't lost when someone
runs this tool to check things.

In case of the IPv4 address I added some potential edge case addresses
just in case (also their IPv4-mapped IPv6 counterparts).

I was mainly looking at Rust vs Python differences and the new inputs
demonstrate new, previously not visible in the tool's output,
Rust/Python discrepancies.

[1] https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml
[2] https://www.iana.org/assignments/iana-ipv6-special-registry/iana-ipv6-special-registry.xhtml

tools/ipcheck/host/input.txt

@@ -11,11 +11,24 @@
 100.128.0.0
 169.254.0.0
 172.16.10.10
+192.0.0.0
+192.0.0.7
 192.0.0.8
 192.0.0.9
+192.0.0.10
+192.0.0.169
+192.0.0.170
+192.0.0.171
+192.0.0.172
 192.0.0.255
+192.0.2.2
+192.31.196.2
+192.52.193.2
+192.88.99.2
 192.168.0.2
+192.175.48.2
 198.18.0.0
+198.51.100.2
 203.0.113.6
 240.0.0.0
 255.255.255.254
@@ -33,20 +46,55 @@
 ::ffff:100.128.0.0
 ::ffff:169.254.0.0
 ::ffff:172.16.10.10
+::ffff:192.0.0.0
+::ffff:192.0.0.7
 ::ffff:192.0.0.8
 ::ffff:192.0.0.9
+::ffff:192.0.0.10
+::ffff:192.0.0.169
+::ffff:192.0.0.170
+::ffff:192.0.0.171
+::ffff:192.0.0.172
 ::ffff:192.0.0.255
+::ffff:192.0.2.2
+::ffff:192.31.196.2
+::ffff:192.52.193.2
+::ffff:192.88.99.2
 ::ffff:192.168.0.2
+::ffff:192.175.48.2
 ::ffff:198.18.0.0
+::ffff:198.51.100.2
 ::ffff:203.0.113.6
 ::ffff:240.0.0.0
 ::ffff:255.255.255.254
 
 # IPv6
-fdf8:f53b:82e4::53
-fe80::200:5aee:feaa:20a2
+::1
+::
+64:ff9b::
+64:ff9b:1::
+100::
+2001::
+2001:1::1
+2001:1::2
+2001:2::
 2001:0002:6c::430
+2001:3::
+2001:4:112::
+2001:10::
+# In 2001:10::/28
 2001:10:240:ab::a
-2002:cb0a:3cdd:1::1
+2001:20::
+2001:30::
+# In 2001::db8/32
 2001:db8:8:4::2
+2002::
+# In 2002::/16
+2002:cb0a:3cdd:1::1
+2620:4f:8000::
+# In fc00::/7
+fdf8:f53b:82e4::53
+# In fe80::/10
+fe80::200:5aee:feaa:20a2
+
 ff01:0:0:0:0:0:0:2