However a new local ip address has not been found and I can't see it connected to my router
The statement above makes no sense to me.
Post your network configuration and wireless configuration. You do not have to post your IPs just some basics
1 - LAN configuration (subnet size)
2 - DHCP configuration scope and static IP's assigned.
3 - wireless configuration
I am guessing your issues do not relate to IPv6 at all.
Appears more to be a combo router / modem misconfiguration / internet access to your Haiku box than anything else.
What firewall configuration do you have in place for your Haiku box? If the HAIKU box is using DHCP then the address might have changed for the box with your new combo modem thing which would probably change the rules set you had configured on your old router combo box.
All servers here utilize a static IP and only certain devices here on the network utilize DHCP or a static DHCP configuration.
Here CC is including a public accessible wireless interface on all of their new combo router / modems.
Here like my internet / network stuff a la carte. That is me.
IE: separate modem, router, firewall, VOIP box and access points). I did the same with the combination doo what from Verizon (FIOS). It is only used for the STBs and I bridge the internet connection to another firewall and access point.
Just recently helped a Homeseer user with their new ISP provided combo box. The ISP CS folks just stated to her that she needed a new computer to work with their new combo box and they couldn't do anything to help her configure her Homeseer box to their new combo router box. It was an easy answer. She went back to her old ISP provided stuff then.
You cannot shut it off or make changes to it. It is their way of providing free wireless to anybody nearby as long as they have a CC account.
How exactly are you connecting your IPhone to your home network?
1 - via the internet
2 - via the internally configured wireless built in to your AP
3 - maybe the externally public configured wireless built in to your AP (not sure if you have this though).