[Bug 1667] sshd slow connect with 'UseDNS yes'

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=1667

--- Comment #13 from Brian <brian.p.stamper at nasa.gov> 2009-11-06 05:15:08 EST ---
Using the name servers from the fine folks at google and redhat, I seem
to see the same behavior.  So I'm not sure where I should be looking at
this point.  Do you know of a public DNS server that is definitely
configured properly for ipv6?  Since I don't see this behavior from
hosts that are not fedora 11 on the same subnets, I don't believe it's
a router or DNS server issue.  If you concur, I'll move this issue to
the fedora issues list.

-Brian


[root at centroid ~]# time nslookup ns2.google.com 216.239.34.10
Server:         216.239.34.10
Address:        216.239.34.10#53

Name:   ns2.google.com
Address: 216.239.34.10


real    0m0.094s
user    0m0.001s
sys     0m0.003s
[root at centroid ~]# time nslookup ns2.google.com ns2.google.com
Server:         ns2.google.com
Address:        216.239.34.10#53

Name:   ns2.google.com
Address: 216.239.34.10


real    0m5.280s
user    0m0.002s
sys     0m0.002s
[root at centroid ~]# grep name /etc/resolv.conf 
#nameserver 128.102.0.34
#nameserver 143.232.252.34
nameserver 216.239.34.10


========================================================

[root at centroid ~]# time nslookup ns1.redhat.com
Server:         66.187.233.210
Address:        66.187.233.210#53

Name:   ns1.redhat.com
Address: 66.187.233.210


real    0m0.091s
user    0m0.002s
sys     0m0.002s
[root at centroid ~]# time nslookup ns1.redhat.com ns1.redhat.com
Server:         ns1.redhat.com
Address:        66.187.233.210#53

Name:   ns1.redhat.com
Address: 66.187.233.210


real    0m5.267s
user    0m0.001s
sys     0m0.004s
[root at centroid ~]# time nslookup ns1.redhat.com 66.187.233.210
Server:         66.187.233.210
Address:        66.187.233.210#53

Name:   ns1.redhat.com
Address: 66.187.233.210


real    0m0.090s
user    0m0.001s
sys     0m0.002s
[root at centroid ~]# cat /etc/resolv.conf 
search arc.nasa.gov
#nameserver 128.102.0.34
#nameserver 143.232.252.34
nameserver 66.187.233.210

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