I am using TLSAttacker to try to connect to the server. When I use the provided command in the XML, I receive the error 'Could not resolve IPv6 address for host c-tlsattacker-0.rwc.cs.uni-paderborn.de'. I have tried searching for a configuration to disable V6, but I cannot find one. Could you please give me some advice on what to do? I am using the university VPN.