Created attachment 439997 [details] Strace of a failing whois Customer has run into a problem with the same symptoms as BZ 415481. On an IPV4 only connection whois querys all fail. [root@tux ~]# whois 192.0.32.10 [Querying whois.ripe.net] [Unable to connect to remote host] [root@tux ~]# The fix was a broad package upgrade in the referenced bug. Bug also included an strace which I will reattach here.