[Bug 1860] UseDNS option ignored

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=1860

--- Comment #5 from pavel.krejci at siemens-enterprise.com 2011-07-13 20:49:48 EST ---
(In reply to comment #2)
> If it's the server, the other thing that can do it is the system login
> recording libraries (try sshd -u0).

The -u0 options does not help. Attached is the trace of sshd with this
option enabled. It took more than 1 minute before the "login as:"
dialog appeared in the Putty client. The NS lookup is made:

20538:   open("/etc/resolv.conf", O_RDONLY, 0666)   = 4
20538:   ioctl(4, TCGETS, 0x08046F64)         Err#25 ENOTTY
20538:   fxstat(2, 4, 0x08046FA4)         = 0
20538:   brk(0x0814ECE0)               = 0
20538:   read(4, " n a m e s e r v e r   1".., 8192)   = 20
20538:   read(4, 0x0814A090, 8192)         = 0
20538:   close(4)               = 0
20538:   nuname(0x08046B6B)            = 1
20538:   xsocket(UW71|XPG4, AF_INET, SOCK_DGRAM, 0)   = 4
20538:   xconnect(UW71|XPG4, 4, 0xBFF5D9B4, 16)      = 0
20538:   xsendmsg(UW71|XPG4, 4, 0x08046DB4, 0)      = 42
...

Also the sshd_config attached.

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