Another admin worked on this, and reported that it stopped
hanging after he reinstalled wu-ftpd, then began hanging again after
about 1/2 hour. At that point he added another nic, a cable to the
local switch, and a route such that the box could reach a name server
(which violates the project requirements so it's not a real fix).
It's not showing the hang problem at this point; I don't understand
why reinstall would 'fix' it for 1/2 an hour. The timeout was the
same each time.
telnet was connecting without delay, when ftp was showing
the problem. man gethostbyname and gethostbyaddr mention /etc/hosts
and so on; I probably won't have the time to look at source this
week, but depending on project-level decisions recompilation might
be the way to go here.
No tcpwrappers; identd is not running. wu-ftpd is started
by xinetd, no delays in starting a gui prog instead of the ftp server.
I don't see any timeouts reported in /var/log/messages, the entries
there from wu-ftpd all show venus resolved by name and ip for each
connection.
/etc/hosts lists the two boxes on the segment; host.conf
does contain "order hosts,bind".
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 wpllinux localhost.localdomain localhost
2xx.2xx.34.77 venus venus.t-t.com
Thanks for all the answers!
Dave
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