nic_names-eth.sh: 39: Syntax error: "(" unexpected (expecting "fi")

The error message in `nic_names-eth.sh` at line 39 suggests a syntax issue with an unexpected opening parenthesis `(`. It appears to be looking for the keyword `fi`, which typically indicates the end of a case or if statement in shell scripts. Here's what the problem might look like:

if condition; (
    commands...
)
# Expecting "fi" here, but found "(" instead.

To resolve this, you should either close the current block by removing the extra parenthesis or properly complete the conditional and associated commands within it:

if condition; then
    commands...
else
    # Add more branches as needed
fi

If there was a typo or the script has a nested structure, ensure that all parentheses are balanced correctly.