Wrong address with System.Net.Dns.GetHostAddresses...

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I try to get the IP address of a dyndns server.
I have tried several methodes.
Doing it by hand with a "ping myserver.dnsalias.net" works fine
By C#

C#

System.Net.Dns.GetHostAddresses("myserver.dnsalias.net")

or

C#

Dns.GetHostEntry("myserver.dnsalis.net");

or

C#

pingSender.Send("myserver.dnsalis.net" );

always returns a wrong or maybe old address.
Any idea what to do ?

regards
Peter

Posted 3-Sep-11 1:49am

holschbach

Updated 3-Sep-11 1:53am

Wendelius

v2

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holschbach · Answer 1 · 2011-09-06T03:58:00

Thank you, but this is one of the option that I have tried.
All IP adresses which are returned (at least two) are wrong. Same for the other two functions I have tried :

Dns.GetHostEntry("myserver.dnsalis.net");

and

pingSender.Send("myserver.dnsalis.net" );

All methodes lead to the same wrong IP adress.
Same computer same network the test with command line "ping" works.

I have tried to see the DNS request of the c# program by wireshark, but I didn't found it. Doing the test by command line "ping" I can see the DNS request with wireshark. Maybe there is a configuration I can use for the .net LIB to cache the IP address or to disable a cache ?