It might be a config issue, not a firmware issue. There are numerous guides/howtos floating around for configuring cisco/juniper/etc. equipment that uses 1.1.

It might be a config issue, not a firmware issue. There are numerous guides/howtos floating around for configuring cisco/juniper/etc. equipment that uses 1.1.1.1,2.2.2.2 for things like loopback addresses(these are used for very different things than the lo device of 127.0.0.1), or uses such addresses for peer to peer links etc. People just copy paste these configs without thinking, I'm not at all surprised 1.1.1.1 breaks left and right.