Quoting Johnny Hughes johnny@centos.org:
Larry Vaden wrote:
What are the likely cockpit errors involved when getting POOR results when running this test on an updated CentOS 5.2?
Kind regards/ldv
[root@shell ~]# dig +short porttest.dns-oarc.net TXT z.y.x.w.v.u.t.s.r.q.p.o.n.m.l.k.j.i.h.g.f.e.d.c.b.a.pt.dns-oarc.net. "a.b.c.d is POOR: 26 queries in 1.3 seconds from 1 ports with std dev 0.00"
if this is a centos machine (your dns server) ... you may have a line like this in the config named.conf file:
query-source address * port 53;
Or you may be forwarding to an unpatched DNS server, or you may be behind a NAT devices that remaps the source ports on outgoing requests.