Error right after login: Invalid IP address

Hi

I've setup a new Raspberry Pi 3+ with OMV 5 and have problems right after login. Not allways, but often Just right after clicking I get this:

Error #0:

OMV\HttpErrorException: Invalid IP address. in /usr/share/php/openmediavault/session.inc:185

Stack trace:

#0 /usr/share/php/openmediavault/session.inc(207): OMV\Session->validateIpAddress()

#1 /var/www/openmediavault/index.php(34): OMV\Session->validate()

#2 {main}

Raspberry has been set up with newest Raspbian and with the install script as mentioned in the documentation in the download area for single board computers. The only thing I chnaged is that I reenabled ipv6 as this was not working after installation. Following another thread I changed in /etc/sysctl.d/99-openmediavault.conf the

# Enable/Disable IPv6

net.ipv6.conf.all.disable_ipv6 = 1

net.ipv6.conf.default.disable_ipv6 = 1

to 0. With this change I get correct IPv6 (public and ULA), with correct routing and listed in DNS on the router.

But it now kicks me out sometimes and I wonder if this is due to the different ip addresses (which shouldn't be a problem). So is there maybe some of the UI pages relying fixed on IPv4 maybe?

Any help welcome.

King regards

S

This is what I thought. But why?

I use Firefox and connect to the pi-kodi by its name. A host query on my maschine gives me three IPs for the pi-kodi: one IPv4, one IPv6 ULA and one IPv6 with public prefix.

It also happens on a very few pages only. Right on/after the login and when going to System Information -> Performance statistics.

If I connect to the pi-kodi by IPv4 or IPv6, everything works fine.

As this behaviour only happens on OMV 5 (i have two pis), never happened before with OMV 4 (where I didn't had IPv6) and does not happen at all on any other system or web-site, I wonder where the problem is.