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[perl #101574] Socket6 accept(clone,server)

From:
root @ grommet . slackware . lan
Date:
October 18, 2011 02:47
Subject:
[perl #101574] Socket6 accept(clone,server)
Message ID:
rt-3.6.HEAD-31297-1318917927-738.101574-75-0@perl.org
# New Ticket Created by  root@grommet.slackware.lan 
# Please include the string:  [perl #101574]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=101574 >


This is a bug report for perl from root@grommet.slackware.lan,
generated with the help of perlbug 1.33 running under perl v5.6.1.


-----------------------------------------------------------------
[Please enter your report here]

Socket6 does not return ::1

Socket6 0.23

tcp connection to localhost
same result with 
server bound to in6addr_any or in6addr_loopback

vacant $PORT used for testing

client connect to in6addr_loopback

on server side
$paddr = accept($clone,$server)

returns funny netaddr

netstat -na	immediately following close

tcp        0      0 ::1:10000               ::1:60084
TIME_WAIT   
tcp        0      0 ::1:10000               ::1:60080
TIME_WAIT   

ifconfig
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1

unpack('C*',$paddr);
10 0 234 204 0 0 0 0 0 0 0 0 0 0 0 0 236 247 255 191 128 106 9 8 0 0 0 0

text result from unpack_sockaddr_in6_all
port, 60084, flow 0, scope 0 0:0:0:0:ecf7:ffbf:806a:908

This appears to be a flaw in "accept"


[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=library
    severity=medium
---
Site configuration information for perl v5.6.1:

Configured by root at Wed Apr 11 22:55:30 PDT 2001.

Summary of my perl5 (revision 5.0 version 6 subversion 1) configuration:
  Platform:
    osname=linux, osvers=2.4.2, archname=i386-linux
    uname='linux grommet 2.4.2 #1 smp sun feb 25 16:33:33 pst 2001 i686 unknown '
    config_args='-de -Dprefix=/usr -Darchname=i386-linux -Dprivlib=/usr/lib/perl5 -Darchlib=/usr/lib/perl5/i386-linux -Dsitelib=/usr/lib/perl5/site_perl -Dsitearch=/usr/lib/perl5/site_perl/i386-linux'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef
    useperlio=undef d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
  Compiler:
    cc='cc', ccflags ='-fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O2',
    cppflags='-fno-strict-aliasing -I/usr/local/include'
    ccversion='', gccversion='2.95.3 20010315 (release)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=4, usemymalloc=n, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lnsl -lndbm -lgdbm -ldl -lm -lc -lcrypt -lutil
    perllibs=-lnsl -ldl -lm -lc -lcrypt -lutil
    libc=/lib/libc-2.2.2.so, so=so, useshrplib=false, libperl=libperl.a
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic'
    cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'

Locally applied patches:
    

---
@INC for perl v5.6.1:
    /usr/lib/perl5/i386-linux
    /usr/lib/perl5
    /usr/lib/perl5/site_perl/i386-linux
    /usr/lib/perl5/site_perl
    /usr/lib/perl5/site_perl
    .

---
Environment for perl v5.6.1:
    HOME=/root
    LANG (unset)
    LANGUAGE (unset)
    LC_ALL=POSIX
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/usr/local/ssl/bin:/opt/www/htdig/bin:/opt/kde/bin:/opt/sgml/bin:/usr/share/texmf/bin:/usr/openwin/bin
    PERL_BADLANG (unset)
    SHELL=/bin/bash




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