Solved: Dig-yes, ping-unknown host
behle at tecs.de
Tue Nov 23 19:51:45 UTC 1999
I've got it. (some time ago, but my provider's news server is lame)
Some may remember a problem with bind 4.9.7 on
Was able to dig everey host. But ping/ftp/traceroute/... gave
"unknown host" with SOME hosts. All were CNAMEs.
Checked config, reinstalled, upgraded to bind8 (assuming
conflict between libs, corrupted files).
A friend pointed me to the nscd, for which I found a
bug-entry in the SuSE-Support-Database at
Here's a quote:
> There is a bug in the library ´libnss_dns.so.2´, specifically
> a buffer-overflow, when the appropriate routine is called
> with extremely long strings (ie. computers with long names
> (and aliases) with many IP addresses). The "nscd" daemon
> (Name Service Cache Daemon) forces this error, whereby
> the error described often occurs.
To get the error less often (meaning only with really extreme
long names or extreme many aliases), you can set
´enable-cache hosts´ from ´yes´ to ´no´
in /etc/nscd.conf, which is a new default in SuSE 6.2.
As a longterm solution I will of course have to update the lib.
Thanks to all for helping.
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