Fix IP exceptions referencing the old host var

[bdraco]

We now have multi-ip support but when I refactored, I missed some old .host variables in the exception text

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (37d317d) 74.50% compared to head (507773f) 74.50%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #352 +/- ## ======================================= Coverage 74.50% 74.50% ======================================= Files 99 99 Lines 9301 9301 ======================================= Hits 6930 6930 Misses 2371 2371 ```

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[bdraco]

Issue https://github.com/home-assistant/core/issues/106531

[Jc2k]

(Feel free to merge/release this and other fixes for beta - busy with family so won't be as reliable for acks).

[bdraco]

(Feel free to merge/release this and other fixes for beta - busy with family so won't be as reliable for acks).

Hopefully this is the only one. 🤞