Failed to disable ISC DHCPv6 while no available address range for configured interface is available

[itn3rd77]

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Describe the bug

I struggle to get an IPv6 address from my ISP for days so I do currently not have any IPv6 address and hence track IPv6 on my LAN interface is not working (no available address range).

For some testing I wanted to disable ISC DHCPv6 on the LAN interface but that fails while there is no available address range. Obviously disable should not be a problem regardless if the is an available address range.

Tip: to validate your setup was working with the previous version, use opnsense-revert (https://docs.opnsense.org/manual/opnsense_tools.html#opnsense-revert)

To Reproduce

Steps to reproduce the behavior:

1. Ensure you have no IPv6 delegated from your WAN
2. Go to 'Services: ISC DHCPv6 '
3. Click on '[LAN]'
4. Unselect "Enable DHCP server on the LAN interface"
5. Click on 'Save'
6. See error

Expected behavior

Even if no available address range is available it should be posible to disable ISC DHCPv6 for that interface

Describe alternatives you considered none

Screenshots

Relevant log files

If applicable, information from log files supporting your claim.

Additional context

Add any other context about the problem here.

Environment

Software version used and hardware type if relevant, e.g.:

OPNsense 24.7.3_1-amd64 FreeBSD 14.1-RELEASE-p3 OpenSSL 3.0.14

[fichtner]

Can you try 296399a?

# opnsense-patch 296399a

Cheers, Franco

[itn3rd77]

Yep that did the job👍Thanks Franco.

Cheers, Ingo

[fichtner]

Sure thing, enjoy your weekend :)

[itn3rd77]

Btw. after disabling "Allow manual adjustment of DHCPv6 and Router Advertisements" on all internal Interfaces I instantly got an IPv6 again from Deutsche Glasfaser. Is that a know problem with some ISPs?

[fichtner]

DG is a bit whacky at the moment but given the whole FreeBSD IMCPv6 SA situation I don't know if that was from our end or theirs. Need a bit of time to find out during 24.7.x iterations.