Thread View: comp.sys.sequent
2 messages
2 total messages
Started by Richard Perlman
Fri, 19 Apr 1991 04:07
Problem with DNS lookups on a remnote server
Author: Richard Perlman
Date: Fri, 19 Apr 1991 04:07
Date: Fri, 19 Apr 1991 04:07
62 lines
2781 bytes
2781 bytes
I recently turned on resolver (i.e. I put resolv.conf into /etc) and
immediately started having problems with telnet and sendmail. Telnet
would no longer connect to our gateway machine (ns.pacbell.com, see
network description and nslookup output below) and sendmail timed out
for 15 minutes before a succesful resend.
Our set-up:
Our local system is Symmetry running DYNIX 3.0.17. We are
not running DNS - yet.
Our gateway system (a Sun) sits between "the Internet"
(129.245.1 and our internal backbone, 129.245.2). TCP/IP traffic is
not routed between the networks. i.e. I cannot reach network 1, and
net 1 cannot reach me. (we are using an 8 bit subnet on a class B network).
The gateway Sun is also the Name Server and is referenced in our
resolv.conf.
I ran nslookup on the Sequent (using the Sun as the default Name
server). Here is what I got back:
]
] Default Server: ns.PacBell.COM
] Address: 129.245.2.20
]
] > set debug
] > ns.pacbell.com
] Server: ns.PacBell.COM
] Address: 129.245.2.20
] ------------
] Got answer:
] HEADER:
] opcode = QUERY, id = 2, rcode = NOERROR
] header flags: response, auth. answer, want recursion, recursion avail.
] questions = 1, answers = 2, auth. records = 0, additional = 0
] QUESTIONS:
] ns.PacBell.COM, type = A, class = IN
] ANSWERS:
] -> ns.PacBell.COM inet address = 129.245.1.2
] -> ns.PacBell.COM inet address = 129.245.2.20
] ------------
] Name: ns.PacBell.COM
] Address: 129.245.1.2
When running the same command from an HP-9000 I got the 'ANSWERS' in the
opposite order and got both answers in the output.
It appears telnet (and sendmail) are trying to connect to net 1 and
while telnet never makes the connection, sendmail can somehow recoup
and connect to net 2.
According to Sequent, there is a problem in 3.0.17 that is fixed in
3.1, however, we may not be upgrading for a while due to work load and
I would like to find some kind of a work around.
Any ideas???
--
Always remember that you are here having already understood the necessity of
contending only with yourself. Thank everyone who affords you the opportunity.
-- Anonymous --
Richard Perlman |*| perl@pbseps.pacbell.com |*| (415) 545-0233
Re: Problem with DNS lookups on a remnote server
Author: Root Boy Jim
Date: Fri, 19 Apr 1991 23:26
Date: Fri, 19 Apr 1991 23:26
14 lines
1003 bytes
1003 bytes
In an article perl@pbseps.PacBell.COM (Richard Perlman) writes: > >It appears telnet (and sendmail) are trying to connect to net 1 and >while telnet never makes the connection, sendmail can somehow recoup >and connect to net 2. One problem may be your default route. Try telnet'ing to both addresses (not the name). If only one works, you need a default route. Also, some versions of telnet don't try all addresses, just the first one. You might be interested in the version in our anonymous ftp directory. -- [rbj@uunet 1] stty sane unknown mode: sane
Thread Navigation
This is a paginated view of messages in the thread with full content displayed inline.
Messages are displayed in chronological order, with the original post highlighted in green.
Use pagination controls to navigate through all messages in large threads.
Back to All Threads