munin-node.conf allow is whitespace-sensitive

[vanschelven]

Describe the bug

a munin-node.conf with a line like so won't work:

allow ^123\.123\.123\.123$   # server 123, in Utah

This even extends to trailing whitespace (no comment at all):

allow ^123\.123\.123\.123$       

To Reproduce

Steps to reproduce the behavior:

1. add allow line with trailing comment to munin-node.conf
2. restart munin-node
3. look at the logs
4. observe Denying connection from: ::ffff:123.123.123.123

For way to long, I experimented with different regexes to match the ::ffff: part of the reported IP in the error-message, but it's irrelevant: the original allow directive is fine, except for the whitespace at the end of the line.

Expected behavior

Comments and trailing whitespace to be ignored (they can never match an IP address or hostname anyway)

Screenshots & Logs
If applicable, please add screenshots and/or logs to help explain your problem.

Desktop (please complete the following information):

• Ubuntu 24.04
• This is munin-node v2.0.75