Re: bizarre TCP behavior

2001-04-20 Thread Stefan Traby
On Sat, Apr 14, 2001 at 03:27:53PM +0100, Alan Cox wrote: > > For example the Zyxel 681 SDSL-Router breaks ECN by > > stripping 0x80 (ECN Cwnd Reduced) but not 0x40 (ECN Echo) > > (TOS bits) on all SYN packets (!). > > > > I complained because of this two times more than a month ago > > but they

Re: bizarre TCP behavior

2001-04-20 Thread Stefan Traby
On Sat, Apr 14, 2001 at 03:27:53PM +0100, Alan Cox wrote: For example the Zyxel 681 SDSL-Router breaks ECN by stripping 0x80 (ECN Cwnd Reduced) but not 0x40 (ECN Echo) (TOS bits) on all SYN packets (!). I complained because of this two times more than a month ago but they do not even

Re: bizarre TCP behavior

2001-04-14 Thread Dan Hollis
On Sat, 14 Apr 2001, Alan Cox wrote: > If the router claims to be RFC compliant then you may want to investigate > trading standards bodies. In the UK at least things like the advertising > standards agency get upset by people who claim standards compliance, are shown > not to be compliant and

Re: bizarre TCP behavior

2001-04-14 Thread Alan Cox
> For example the Zyxel 681 SDSL-Router breaks ECN by > stripping 0x80 (ECN Cwnd Reduced) but not 0x40 (ECN Echo) > (TOS bits) on all SYN packets (!). > > I complained because of this two times more than a month ago > but they do not even respond. If the router claims to be RFC compliant then

Re: bizarre TCP behavior

2001-04-14 Thread Stefan Traby
On Wed, Apr 11, 2001 at 02:21:42AM +0200, Andi Kleen wrote: > Try echo 0 > /proc/sys/net/ipv4/tcp_ecn > If it helps complain to the sites that their firewall is broken. Not always firewall related. There are companies like Zyxel that ship broken router too. For example the Zyxel 681

Re: bizarre TCP behavior

2001-04-14 Thread Stefan Traby
On Wed, Apr 11, 2001 at 02:21:42AM +0200, Andi Kleen wrote: Try echo 0 /proc/sys/net/ipv4/tcp_ecn If it helps complain to the sites that their firewall is broken. Not always firewall related. There are companies like Zyxel that ship broken router too. For example the Zyxel 681 SDSL-Router

Re: bizarre TCP behavior

2001-04-14 Thread Alan Cox
For example the Zyxel 681 SDSL-Router breaks ECN by stripping 0x80 (ECN Cwnd Reduced) but not 0x40 (ECN Echo) (TOS bits) on all SYN packets (!). I complained because of this two times more than a month ago but they do not even respond. If the router claims to be RFC compliant then you may

Re: bizarre TCP behavior

2001-04-14 Thread Dan Hollis
On Sat, 14 Apr 2001, Alan Cox wrote: If the router claims to be RFC compliant then you may want to investigate trading standards bodies. In the UK at least things like the advertising standards agency get upset by people who claim standards compliance, are shown not to be compliant and are

Re: bizarre TCP behavior

2001-04-10 Thread Andi Kleen
On Tue, Apr 10, 2001 at 05:35:31PM -0700, Mike Castle wrote: > On Wed, Apr 11, 2001 at 02:21:42AM +0200, Andi Kleen wrote: > > Try echo 0 > /proc/sys/net/ipv4/tcp_ecn > > If it helps complain to the sites that their firewall is broken. > > It's certain that this refers only to the site firewall?

Re: bizarre TCP behavior

2001-04-10 Thread Mike Castle
On Wed, Apr 11, 2001 at 02:21:42AM +0200, Andi Kleen wrote: > Try echo 0 > /proc/sys/net/ipv4/tcp_ecn > If it helps complain to the sites that their firewall is broken. It's certain that this refers only to the site firewall? I had to do this to get to www.ibm.com. :-< mrc -- Mike

Re: bizarre TCP behavior

2001-04-10 Thread Andi Kleen
On Tue, Apr 10, 2001 at 06:24:46PM -0400, Dave wrote: > > I am having a very strange problem in linux 2.4 kernels. I have not set > any iptables rules at all, and there is no firewall blocking any of my > outgoing traffic. At what seems like random selection, I can not connect > to IP's yet I

Re: bizarre TCP behavior

2001-04-10 Thread Dave
This did fix my problem. Thanks very much, I'll be sure to send a polite message to the admins at sites where I notice this problem! Any detailed info you might have on why this was failing? dave --- This is my signature. There are many like it but this one is mine. On Tue, 10 Apr

Re: bizarre TCP behavior

2001-04-10 Thread Gregory Maxwell
On Tue, Apr 10, 2001 at 06:24:46PM -0400, Dave wrote: > I am having a very strange problem in linux 2.4 kernels. I have not set > any iptables rules at all, and there is no firewall blocking any of my > outgoing traffic. At what seems like random selection, I can not connect > to IP's yet I can

bizarre TCP behavior

2001-04-10 Thread Dave
I am having a very strange problem in linux 2.4 kernels. I have not set any iptables rules at all, and there is no firewall blocking any of my outgoing traffic. At what seems like random selection, I can not connect to IP's yet I can get ping replies from them. Most IP's reply just fine, but

bizarre TCP behavior

2001-04-10 Thread Dave
I am having a very strange problem in linux 2.4 kernels. I have not set any iptables rules at all, and there is no firewall blocking any of my outgoing traffic. At what seems like random selection, I can not connect to IP's yet I can get ping replies from them. Most IP's reply just fine, but

Re: bizarre TCP behavior

2001-04-10 Thread Gregory Maxwell
On Tue, Apr 10, 2001 at 06:24:46PM -0400, Dave wrote: I am having a very strange problem in linux 2.4 kernels. I have not set any iptables rules at all, and there is no firewall blocking any of my outgoing traffic. At what seems like random selection, I can not connect to IP's yet I can get

Re: bizarre TCP behavior

2001-04-10 Thread Dave
This did fix my problem. Thanks very much, I'll be sure to send a polite message to the admins at sites where I notice this problem! Any detailed info you might have on why this was failing? dave --- This is my signature. There are many like it but this one is mine. On Tue, 10 Apr

Re: bizarre TCP behavior

2001-04-10 Thread Andi Kleen
On Tue, Apr 10, 2001 at 06:24:46PM -0400, Dave wrote: I am having a very strange problem in linux 2.4 kernels. I have not set any iptables rules at all, and there is no firewall blocking any of my outgoing traffic. At what seems like random selection, I can not connect to IP's yet I can

Re: bizarre TCP behavior

2001-04-10 Thread Mike Castle
On Wed, Apr 11, 2001 at 02:21:42AM +0200, Andi Kleen wrote: Try echo 0 /proc/sys/net/ipv4/tcp_ecn If it helps complain to the sites that their firewall is broken. It's certain that this refers only to the site firewall? I had to do this to get to www.ibm.com. :- mrc -- Mike Castle

Re: bizarre TCP behavior

2001-04-10 Thread Andi Kleen
On Tue, Apr 10, 2001 at 05:35:31PM -0700, Mike Castle wrote: On Wed, Apr 11, 2001 at 02:21:42AM +0200, Andi Kleen wrote: Try echo 0 /proc/sys/net/ipv4/tcp_ecn If it helps complain to the sites that their firewall is broken. It's certain that this refers only to the site firewall? I had