misc/157499: fetch confused me with it's error message

[Konstantin]

>Number:         157499
>Category:       misc
>Synopsis:       fetch confused me with it's error message
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jun 01 14:20:05 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Konstantin
>Release:        8.2-RELEASE/7.3-RELEASE
>Organization:
Kaspersky Lab
>Environment:
FreeBSD ourhost.kaspersky.com 7.3-RELEASE-p3 FreeBSD 7.3-RELEASE-p3 #0: Tue Sep 21 18:03:17 MSD 2010     root at ourhost.kaspersky.com:/usr/obj/usr/src/sys/GENERIC  amd64

>Description:
I have found out some strange error handling in /usr/bin/fetch.
Here it is: 

# fetch ftp://ftp.freebsd.org/pub/FreeBSD/ports/ports/ports.tar.gz
fetch: ftp://ftp.freebsd.org/pub/FreeBSD/ports/ports/ports.tar.gz: Syntax error, command unrecognized

So it's very confusing error message. With some extra debug it looks more clear: 

# fetch -vvv ftp://ftp.freebsd.org/pub/FreeBSD/ports/ports/ports.tar.gz
scheme:   [ftp]
user:     []
password: []
host:     [ftp.freebsd.org]
port:     [0]
document: [/pub/FreeBSD/ports/ports/ports.tar.gz]
---> ftp.freebsd.org:21
looking up ftp.freebsd.org
connecting to ftp.freebsd.org:21
<<< 220 Welcome to freebsd.isc.org.
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted:
 >>> USER anonymous
 <<< 331 Please specify the password.
 >>> PASS root at h-ksn-hkg-fe-2.kaspersky-labs.com
 <<< 500 OOPS: cannot change directory:/home/ftp
 fetch: ftp://ftp.freebsd.org/pub/FreeBSD/ports/ports/ports.tar.gz: Syntax error, command unrecognized
 
 # host ftp.freebsd.org
 ftp.freebsd.org has address 204.152.184.73
 ftp.freebsd.org has address 87.51.34.132
 ftp.freebsd.org has address 149.20.64.73
 ftp.freebsd.org has IPv6 address 2001:4f8:0:2::e
 ftp.freebsd.org has IPv6 address 2001:6c8:2:600::132
 
 Actually this problem exists only with 204.152.184.73 server. See ftp connect to it:
 # ftp
 ftp> open ftp.freebsd.org
 Trying 204.152.184.73...
 Connected to ftp.freebsd.org.
 220 Welcome to freebsd.isc.org.
 Name (ftp.freebsd.org:root): ftp
 331 Please specify the password.
 Password:
 500 OOPS: cannot change directory:/home/ftp
 ftp: Login failed.
 ftp> exit
 500 OOPS: priv_sock_get_cmd
 
 I don't know why fetch on 7.3 sticked to this server and I had error 'Syntax error, command unrecognized' every time I run fetch. It could be some problem in DNS resolving algorithm on 7.3. On 8.2 fetch works with different servers, so I had this error n ot very often.    
 
 Anyway, error message 'Syntax error, command unrecognized' on some FTP problems sounds very confusing for me.