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Full Discussion: DNS flush is not working
Homework and Emergencies Emergency UNIX and Linux Support DNS flush is not working Post 302667589 by solaris_1977 on Friday 6th of July 2012 01:15:41 PM
Old 07-06-2012
DNS flush is not working

I have a Linux machine and it seems DNS cache is not getting clear on it. It is still showing old values, even after changing in DNS server by Network team. I did
Code:
/etc/init.d/nscd restart

But still it is showing old values on this server.
On my rest of servers in environment, nslookup is showing updated value, so problem is only with this server.
Please advice.
 

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unbound-streamtcp(1)						      unbound						      unbound-streamtcp(1)

NAME
unbound-streamtcp - unbound DNS lookup utility SYNOPSIS
unbound-streamtcp [-unsh] [-f ipaddr[@port]] name type class DESCRIPTION
unbound-streamtcp sends a DNS Query of the given type and class for the given name to the DNS server over TCP and displays the response. If the server to query is not given using the -f option then localhost (127.0.0.1) is used. More queries can be given on one commandline, they are resolved in sequence. The available options are: name This name is resolved (looked up in the DNS). type Specify the type of data to lookup. class Specify the class to lookup for. -u Use UDP instead of TCP. No retries are attempted. -n Do not wait for the answer. -s Use SSL. -h Print program usage. -f ipaddr[@port] Specify the server to send the queries to. If not specified localhost (127.0.0.1) is used. EXAMPLES
Some examples of use. $ unbound-streamtcp www.example.com A IN $ unbound-streamtcp -f 192.168.1.1 www.example.com SOA IN $ unbound-streamtcp -f 192.168.1.1@1234 153.1.168.192.in-addr.arpa. PTR IN EXIT CODE
The unbound-streamtcp program exits with status code 1 on error, 0 on no error. AUTHOR
This manual page was written by Tomas Hozza <thozza@redhat.com>. NLnet Labs Mar 21, 2013 unbound-streamtcp(1)
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