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[Bug 228039] New: IP V6 - causing connection delays - cannot be switched off
- From: bugzilla_noreply@xxxxxxxxxx
- Date: Tue, 12 Dec 2006 13:29:16 -0700 (MST)
- Message-id: <bug-228039-21960@xxxxxxxxxxxxxxxxxxxxxxxxx/>
https://bugzilla.novell.com/show_bug.cgi?id=228039
Summary: IP V6 - causing connection delays - cannot be switched
off
Product: SUSE Linux 10.1
Version: Final
Platform: Other
OS/Version: Other
Status: NEW
Severity: Major
Priority: P5 - None
Component: Network
AssignedTo: bnc-team-screening@xxxxxxxxxxxxxxxxxxxxxx
ReportedBy: towo@xxxxxxxxxxxx
QAContact: qa@xxxxxxx
I have delays of 12-18 seconds when opening a TCP connection.
It is caused by a DSL router which drops IP V6 packets ignorantly
(rather than handling or rejecting them) and by the timeout applied
before the system retries with IP V4. This is confirmed by the
"disableIPv6" option that firefox offers locally; setting it to
true fixes the problem for web access but not for any access outside
firefox (command line ftp/ssh etc).
So how can IP V6 be disabled completely in the system?
This is with SUSE 10.1, in contrast to the same effect described in
bug #200180 which suggests that it can be disabled by yast in 10.2.
(Also I think it's different from bug #147656 and bug #147075 which
describe missing IP V6 functionality if I understand them right.)
I found advice on the Internet (also referred to in bug #200180) to
manipulate one of /etc/modules.conf or /etc/modprobe.conf (depending
on SUSE release) and set either:
alias net-pf-10 off
or:
alias net-pf-10 ipv6
install ipv6 /bin/true
Nothing works.
I also tried in /etc/sysconfig/SuSEfirewall2:
FW_IPv6_REJECT_OUTGOING="yes"
Nothing works.
Since this interworking problem is not too exotic (there are other
reports, in other network situations too, including with external
servers), I consider this a major bug.
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Summary: IP V6 - causing connection delays - cannot be switched
off
Product: SUSE Linux 10.1
Version: Final
Platform: Other
OS/Version: Other
Status: NEW
Severity: Major
Priority: P5 - None
Component: Network
AssignedTo: bnc-team-screening@xxxxxxxxxxxxxxxxxxxxxx
ReportedBy: towo@xxxxxxxxxxxx
QAContact: qa@xxxxxxx
I have delays of 12-18 seconds when opening a TCP connection.
It is caused by a DSL router which drops IP V6 packets ignorantly
(rather than handling or rejecting them) and by the timeout applied
before the system retries with IP V4. This is confirmed by the
"disableIPv6" option that firefox offers locally; setting it to
true fixes the problem for web access but not for any access outside
firefox (command line ftp/ssh etc).
So how can IP V6 be disabled completely in the system?
This is with SUSE 10.1, in contrast to the same effect described in
bug #200180 which suggests that it can be disabled by yast in 10.2.
(Also I think it's different from bug #147656 and bug #147075 which
describe missing IP V6 functionality if I understand them right.)
I found advice on the Internet (also referred to in bug #200180) to
manipulate one of /etc/modules.conf or /etc/modprobe.conf (depending
on SUSE release) and set either:
alias net-pf-10 off
or:
alias net-pf-10 ipv6
install ipv6 /bin/true
Nothing works.
I also tried in /etc/sysconfig/SuSEfirewall2:
FW_IPv6_REJECT_OUTGOING="yes"
Nothing works.
Since this interworking problem is not too exotic (there are other
reports, in other network situations too, including with external
servers), I consider this a major bug.
--
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