"Christoph Zwerschke" <cito(at)online(dot)de> writes:
> It happens only if:
> - the LAN network interface is activated and
> - the TCP/IP protocol is activated and
> - the TCP/IP v6 protocol is not installed
Perhaps you have a name server that is reporting only an IPv6 address
for your machine? Turning off the LAN prevents contacting that server?
regards, tom lane