[squid-users] Dual Stack (IPv4,IPv6) Oddities

Sorry if this has already been addressed at some time, however I was
unable to find anyone else having similar occurrences with a dual
stack configuration. For starters, here is what my configuratoin
looks like:

Squid Version:

    Squid Cache: Version 3.1.6
    configure options: '--build=x86_64-linux-gnu' '--prefix=/usr'
'--includedir=${prefix}/include' '--mandir=${prefix}/share/man'
'--infodir=${prefix}/share/info' '--sysconfdir=/etc'
'--localstatedir=/var' '--libexecdir=${prefix}/lib/squid3'
'--disable-maintainer-mode' '--disable-dependency-tracking'
'--disable-silent-rules' '--srcdir=.' '--datadir=/usr/share/squid3'
'--sysconfdir=/etc/squid3' '--mandir=/usr/share/man'
'--with-cppunit-basedir=/usr' '--enable-inline' '--enable-async-io=8'
'--enable-storeio=ufs,aufs,diskd' '--enable-removal-policies=lru,heap'
'--enable-delay-pools' '--enable-cache-digests' '--enable-underscores'
'--enable-icap-client' '--enable-follow-x-forwarded-for'
'--enable-auth=basic,digest,ntlm,negotiate'
'--enable-basic-auth-helpers=LDAP,MSNT,NCSA,PAM,SASL,SMB,YP,DB,POP3,getpwnam,squid_radius_auth,multi-domain-NTLM'
'--enable-ntlm-auth-helpers=smb_lm,'
'--enable-digest-auth-helpers=ldap,password'
'--enable-negotiate-auth-helpers=squid_kerb_auth'
'--enable-external-acl-helpers=ip_user,ldap_group,session,unix_group,wbinfo_group'
'--enable-arp-acl' '--enable-esi' '--disable-translation'
'--with-logdir=/var/log/squid3' '--with-pidfile=/var/run/squid3.pid'
'--with-filedescriptors=65536' '--with-large-files'
'--with-default-user=proxy' '--enable-linux-netfilter'
'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -g -Wall -O2' 'LDFLAGS='
'CPPFLAGS=' 'CXXFLAGS=-g -O2 -g -Wall -O2'
--with-squid=/home/white/debian/packages/squid3/new/squid3-3.1.6

I create a tunnel to my server that is running squid using ssh and
running with a default (debian) configuration. My server is
dual-stacked (public IPv4 and IPv6 addresses) while the client is a
IPv4 only.

Over the past few days I have been developing a website and found an
oddity on what address is reported specifically from my laptop while
using this tunnel. It appears that Squid is alternating between using
the IPv4 and IPv6 address (the destination website is also dual stack)
and as such was making it difficult for myself to deal with these
sessions.

So this appears to be happening because:

    * Squid is choosing to use IPv6 and IPv4 randomly /
interchangeably causing server side session checking to fail (phpBB
has an IP Address check for example)

So my question are:

    * Did I miss something in the configuration file?
    * Has anyone else seen similar issues?
    * Are there fixes/patches/work-arounds for this situation?

Thanks!
Morgan
Received on Fri Oct 15 2010 - 18:52:59 MDT