Date: Wed, 25 Oct 1995 23:57:09 +0000 (GMT) From: Mr D Whitehead (Ext 2703) <davew@sees.bangor.ac.uk> To: mikebo@tellabs.com Cc: bugs@freebsd.org, hackers@freebsd.org Subject: Re: 2.1.0-951020-SNAP: Major bug in NFS again! Message-ID: <17209.9510252357@hermes.sees.bangor.ac.uk> In-Reply-To: <199510252043.PAA00582@sunc210.tellabs.com> from "mikebo@tellabs.com" at Oct 25, 95 03:43:18 pm
next in thread | previous in thread | raw e-mail | index | archive | help
>
> Garrett wrote:
> > Actually, connect(2) is what is presently being done and part of what
> > causes the breakage. From mount_nfs(8):
> >
> > -c For UDP mount points, do not do a connect(2). This must be used
> > for servers that do not reply to requests from the standard NFS
> > port number 2049.
> >
> > Unfortunately, I don't believe that even this option will help, since
> > the problem is that the server is replying from an address that the
> > client has no way of knowing represents the same host. But it may be
> > worth a try. (This option can also be accessed through the deprecated
> > syntax `noconn'.)
> >
> Wahoo! This option did the trick, even though the ip_addrs didn't match.
> This option did _not_ work under 2.0.5R, due to bad hackage of the RPC
^^^^^
I beg to differ, we are using 2.0.5R (from the CD) and
it _was_ the solution to our problem!
> code in libc. It does seem to work under 2.1.0-951020-SNAP! Come to
> think of it, the "bad hackage" was, in fact, a connect() being done in
> lib/libc/rpc/clnt_udp.c.
>
> Hopefully, now that we know this is a workaround for strict 4.4BSD net
> security, the "-o noconn" option will not be removed. I must admit I
> don't understand why a connect(2) is being done. Isn't UDP a connection-
> LESS protocol? Perhaps someone can explain... I am only an egg. ;v)
>
--
Dave Whitehead (Computer Support Staff)
-------------------------------------------------------------------------------
EMAIL:- | TELEPHONE (work):-
(work) davew@sees.bangor.ac.uk | +44 1248 382703 (Direct line)
(home) 100023.1076@compuserve.com | +44 1248 351151 ext 2703
-------------------------------------------------------------------------------
SNAIL MAIL:-
Dave Whitehead
School of Electronic Engineering & Computer Systems,
University College of North Wales,
Dean Street,
Bangor LL57 1UT
------------------------------------------------------------------------------
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?17209.9510252357>