Hi!
I got the "bug" - my bug. I assumed that ns_info address on AOLserver 4.5.1 Linux as intuitively required. But it doesn't. I've just installed AOLserver 4.5.1 and checked.
So both system implement ns_info address in the same way, and reverting wouldn't fix my issue.
Conclusion: You could change the implementation in NaviServer in order to prefer the IPv4 address over the IPv6 address. But otherwise everything is like it was.
=> We'll work with our own implementation of extracting the IP from ifconfig/ipconfig tool output.
Cheers!
Frank