ping "name" resolves what service?

  • Thread starter Thread starter Majstor
  • Start date Start date
M

Majstor

Hello,

1) I have deleted "unwanted" A record both from DNS server, also from WINS,
but still when I do ping by name, resolves wrong.
IPconfig -flushdns doesnot help.
This a part of a problem with RRAS client address registration in DNS
described in Q289735 and Q292822.
It says that you have to delete A records etc, but I just dont understand
where does it "pulls" from when I ping by name.
Is it somewhere in DNS where I didn't delete?

2) Temporary, I have old A records that point to wrong IP (DHCP clients
changing their IP addresses). Is it safe to use "Always update DNS" in DHCP
server "DNS" tab, and what is the purpose of the other, default option
"Update DNS only if DHCP client requests" ? What kind of request is that?
It seems to me that the first option is more logical.
What about "scavenging stale records" option in DNS server?

Regards,
Vladimir
 
1) Figure out what DNS server your client is pointing to.
2) On the DNS server, figure out what IP it has for that Name in the zone.
Use dig or nslookup to look at that DNS server IP directly and query the
name.
If the IP is wrong, then the entry is wrong on the dns server and can be
changed easily using the MMC. If a client keeps updating via dynamic
registration the wrong IP, then check that client for multiple IPs it could
be registering (multiple NICs?)
 
In addition, next time try "Net stop dnscache" and "Net start dnscache" on
the client. On the DNS server, clear the DNS Cache either by doing it from
the DNS console or by restarting DNS service with "Net stop DNS" and "Net
start DNS"

I have found that ipconfig /flushdns does not always clear these issues up -
at least not fast enough.

HTH
Deji
 
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