From: bert hubert <ahu@ds9a.nl>
To: Erik Hensema <erik@hensema.net>
Cc: netdev@oss.sgi.com
Subject: Re: TCP/IPv6 broken in Linux 2.5.64?
Date: Tue, 18 Mar 2003 17:25:32 +0100 [thread overview]
Message-ID: <20030318162532.GA9705@outpost.ds9a.nl> (raw)
In-Reply-To: <20030318131104.GA16367@hensema.net>
On Tue, Mar 18, 2003 at 02:11:04PM +0100, Erik Hensema wrote:
> Hi,
>
> I'm trying to upgrade to Linux 2.5.x from 2.4.x. It seems to be working
> fine, except for IPv6: a TCP session can be established, but I can't send
> data. I can receive it though.
I can confirm this. 2.5.65 can connect to other hosts out there, like ipv6
irc servers, or an IPv6 zonetransfer. However, when I try to ssh from 2.5.65
to another 2.5.65, nothing happens.
2.4.18 can also ssh to 2.5.65.
So we have:
to: 2.4.18 2.5.65
from:
2.4.18 OK OK
2.5.65 OK ERROR
tcpdump from 2.5.65 to 2.5.65:
25.987220 hostA.33180 > hostB.22: S 2721590261:2721590261(0) win 5760
<mss 1440,sackOK,timestamp 15005149 0,nop,wscale 0>
25.987490 hostB.22 > hostA.33180: S 2377513523:2377513523(0)
ack 2721590262 win 5712
<mss 1440,sackOK,timestamp 5200381 15005149,nop,wscale 0>
25.987622 hostA.33180 > hostB.22: . ack 1 win 5760
<nop,nop,timestamp 15005149 5200381>
25.993273 hostB.22 > hostA.33180: P 1:41(40) ack 1 win 5712
<nop,nop,timestamp 5200387 15005149>
26.193443 hostB.22 > hostA.33180: P 1:41(40) ack 1 win 5712
<nop,nop,timestamp 5200588 15005149>
26.757236 hostB.22 > hostA.33180: P 1:41(40) ack 1 win 5712
<nop,nop,timestamp 5201152 15005149>
The originating host does not ACK the received data, it appears. No IPSEC
is involved with this.
Regards,
bert
--
http://www.PowerDNS.com Open source, database driven DNS Software
http://lartc.org Linux Advanced Routing & Traffic Control HOWTO
http://netherlabs.nl Consulting
next prev parent reply other threads:[~2003-03-18 16:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-18 13:11 TCP/IPv6 broken in Linux 2.5.64? Erik Hensema
2003-03-18 13:54 ` Maciej Soltysiak
2003-03-18 16:25 ` bert hubert [this message]
2003-03-18 16:51 ` bert hubert
2003-03-20 15:49 ` kuznet
2003-03-20 16:31 ` bert hubert
2003-03-20 18:10 ` Erik Hensema
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