RE: TCP delay, solved

["David Luyer" <david@luyer.net>]

[ ident lookups causing tcpd to be slow ]

> There's no satisfactory answer to this problem at present, I think.

umm, reading the manual?

man 5 hosts_access [on Debian Linux at least]

CLIENT USERNAME LOOKUP
       When  the client host supports the RFC 931 protocol or one
       of its descendants (TAP, IDENT, RFC 1413) the wrapper pro--
       grams  can retrieve additional information about the owner
       of a connection. Client username information, when  avail--
       able,  is  logged  together with the client host name, and
       can be used to match patterns like:

          daemon_list : ... user_pattern@host_pattern ...

       The daemon wrappers can be configured at compile  time  to
       perform  rule-driven  username  lookups  (default)  or  to
       always interrogate the client host.  In the case of  rule-
       driven  username lookups, the above rule would cause user--
       name  lookup  only  when  both  the  daemon_list  and  the
       host_pattern match.

So it's a compile option on tcpd.  Recompile with it disabled.

David.