I have setup a dns server with named bind-9.11.1-8.P3.fc27.x86_64 on Fedora 27. This is the DNS1 server for my notebook an all local lan (192.168.61.254) The problem is that when bandwidth is fully occupy (download some big data), the DNS cannot resolve new name not in cache [ lesca@dodo ~]$ host getfedora.org 192.168.61.254 Using domain server: Name: 192.168.61.254 Address: 192.168.61.254#53 Aliases: Host getfedora.org not found: 2(SERVFAIL) If I try to resolve this name via 8.8.8.8, I can resolve it [ lesca@dodo ~]$ host getfedora.org 8.8.8.8 Using domain server: Name: 8.8.8.8 Address: 8.8.8.8#53 Aliases: getfedora.org has address 152.19.134.198 .... getfedora.org has IPv6 address 2605:bc80:3010:600:dead:beef:cafe:fed9 getfedora.org has IPv6 address 2610:28:3090:3001:dead:beef:cafe:fed3 getfedora.org has IPv6 address 2604:1580:fe00:0:dead:beef:cafe:fed1 getfedora.org mail is handled by 10 mx1.redhat.com. getfedora.org mail is handled by 20 mx2.redhat.com. I have also try to configure bind to forward only to some forwarders (es. 8.8.8.8; 8.8.4.4;) but the problem is the same: bind do not resolve and 8.8.8.8 yes NOTE: This problem with old version of BIND (Fedora 19) do not occurs Someone can help me to investigate on this problem and howto resolve or mitigate this problem? Many thanks -- Dario Lesca (inviato dal mio Linux Fedora 27 Workstation) _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx