Fedora 36 does not update when ipv6 is available

Using Qubes 4.1. The connection seems to just time out. Tcpdump doesn’t show any return traffic. Different network, or different WiFi to the same ISP (guest network) and it works. The only difference is the guest network doesn’t have ipv6. Nor the does the different network. I don’t have access to another ipv6 enabled network, so not completely certain it isn’t just mine. Tried disabling ipv6 in sys-net, but that didn’t make a difference.