Hi,
yes, FreeBSD is blasting the full socket buffer onto the net
when the destination is "local".
I think it was introduced when the T/TCP changes were committed,
it kind-of makes sense with T/TCP, but other than that
it is a very bad idea to have it on by default.
For one, in many nets including
From: "Darren Reed" <[EMAIL PROTECTED]>
Subject: Re: non-random IP IDs
> How long has your box been up ? How many changes to the system config
> have been made since then ? If you're not there, and it reboots, will
> it come up 100% functional ? Do your computers need some amount of
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On Tue, 17 Apr 2001, Matt Dillon wrote:
> Let me put it another way: I think this sort of thing is an excellent
> example of introducing unnecessary kernel bloat into the system. Who
> gives a fart whether someone can port scan you
In some mail from Alfred Perlstein, sie said:
>
> * Rodney W. Grimes <[EMAIL PROTECTED]> [010417 10:37] wrote:
> > > * Darren Reed <[EMAIL PROTECTED]> [010417 04:29] wrote:
> > > > In some mail from Julian Elischer, sie said:
> > > > >
> > > > > there is a site that calculates server uptime from
* Rodney W. Grimes <[EMAIL PROTECTED]> [010417 10:37] wrote:
> > * Darren Reed <[EMAIL PROTECTED]> [010417 04:29] wrote:
> > > In some mail from Julian Elischer, sie said:
> > > >
> > > > there is a site that calculates server uptime from these numbers.
> > > > All the leading machines are freeBS
On Thu, Apr 19, 2001 at 12:36:11AM +0800, Jessey wrote:
> Dear Sir:
> I call sosend occur error. The error code=22.
> What wrong in my code?
>
> The code follow:
>
> socreate(); file://is ok;
>
> |
> }
>
> top=m_get(MT_DATA,M_DONTWAIT);
>
> if(top==NULL)
> {
> log(LOG_INFO
< said:
> Personally, I like (b). It's right there for those who want it, but
> the bloat-watchers don't have to see that extra few bytes going to
> kernelland.
I think this is reasonable. With the way memory subsystems work these
days, we need to avoid wasting valuable cache in order to get t
> Would it be better to do it as a kernel option?
> options IP_RANDOM_IP_ID for instance? I guess the question is, does the
> kernel have to do a comparison to the sysctl variable each time?
No. *IF* (big if!) something gets notified when a sysctl variable
gets changed (and I don't know of this
Kris Kennaway wrote:
>
> On Tue, Apr 17, 2001 at 10:31:15AM -0700, Matt Dillon wrote:
> >
> > :> It's not worth doing. We would be introducing unnecessary cpu burn on
> > :> every single packet we sent out, all to solve a problem that doesn't
> > :> really exist.
> > :
> > :Well, tha
On Tue, Apr 17, 2001 at 10:41:23AM -0700, Matt Dillon wrote:
>
> :> Let me put it another way: I think this sort of thing is an excellent
> :> example of introducing unnecessary kernel bloat into the system. Who
> :> gives a fart whether someone can port scan you efficiently or
> :>
On Tue, 17 Apr 2001, Kris Kennaway wrote:
> > :Well, that's why it's a sysctl defaulting to off in my patch. Don't
> > :turn it on if you don't want to.
> >
> > Let me put it another way: I think this sort of thing is an excellent
> > example of introducing unnecessary kernel bloat into
:> Let me put it another way: I think this sort of thing is an excellent
:> example of introducing unnecessary kernel bloat into the system. Who
:> gives a fart whether someone can port scan you efficiently or
:> anonymously or not? I get port scanned every day. Most hackers d
On Tue, Apr 17, 2001 at 10:31:15AM -0700, Matt Dillon wrote:
>
> :> It's not worth doing. We would be introducing unnecessary cpu burn on
> :> every single packet we sent out, all to solve a problem that doesn't
> :> really exist.
> :
> :Well, that's why it's a sysctl defaulting to o
> * Darren Reed <[EMAIL PROTECTED]> [010417 04:29] wrote:
> > In some mail from Julian Elischer, sie said:
> > >
> > > there is a site that calculates server uptime from these numbers.
> > > All the leading machines are freeBSD. When you do this it will
> > > no-longer be able to track us :-(
>
:> It's not worth doing. We would be introducing unnecessary cpu burn on
:> every single packet we sent out, all to solve a problem that doesn't
:> really exist.
:
:Well, that's why it's a sysctl defaulting to off in my patch. Don't
:turn it on if you don't want to.
:
:Kris
Let
Dear Sir:I call sosend occur error. The error
code=22.What wrong in my code?The code follow:socreate(); file://is
ok;|}top=m_get(MT_DATA,M_DONTWAIT);
if(top==NULL)
{ log(LOG_INFO, "top=NULL
occur error\n"); goto
out; }
top->m_next=NULL;
top->m_nextpkt=
On Tue, 17 Apr 2001, Alfred Perlstein wrote:
> * Darren Reed <[EMAIL PROTECTED]> [010417 04:29] wrote:
> > In some mail from Julian Elischer, sie said:
> > >
> > > there is a site that calculates server uptime from these numbers.
> > > All the leading machines are freeBSD. When you do this it wil
At 2001-04-17T14:07:08Z, Peter Brezny <[EMAIL PROTECTED]> writes:
> 10.30.1.1 GWxl0 10.30.1.30 FW xl210.20.30.1 LAN
> |
> xl1
> |
> |
> 10.30.1.15 FW - 10.20.15.1 LA
Hi folks,
At the last IETF meeting there were some debates around FreeBSD using a
16-KB initial congestion window in TCP when destination IP address is from
the local subnet. Does anybody remember when it was introduced into the
code and what kind of ideas were behind?
Some reasons were given
>I have configured my system for IPv6, and the system is getting
>autoconfigured properly. (ifconfig shows both IPv4 and v6 addresses).
>I want to read the information about interfaces being configured with IPv6
>address.
>I opened a socket for ip domain and reading the information into "ifconf"
The excerpt from my rc.conf mostly illustrates what I'm trying to do. I
want to connect a host (10.30.1.15) to xl1 So that I can partition it's
traffic from that of the lan connected to xl2.
10.30.1.1 GWxl0 10.30.1.30 FW xl210.20.30.1 LAN
|
Hi
I have configured my system for IPv6, and the system is getting
autoconfigured properly. (ifconfig shows both IPv4 and v6 addresses).
I want to read the information about interfaces being configured with IPv6
address.
I opened a socket for ip domain and reading the information into "ifconf"
thr
* Darren Reed <[EMAIL PROTECTED]> [010417 04:29] wrote:
> In some mail from Julian Elischer, sie said:
> >
> > there is a site that calculates server uptime from these numbers.
> > All the leading machines are freeBSD. When you do this it will
> > no-longer be able to track us :-(
>
> IMHO, ext
In some mail from Julian Elischer, sie said:
>
> Darren Reed wrote:
> >
> > In some mail from Kris Kennaway, sie said:
> > >
> > >
> > > --rwEMma7ioTxnRzrJ
> > > Content-Type: text/plain; charset=us-ascii
> > > Content-Disposition: inline
> > > Content-Transfer-Encoding: quoted-printable
> > >
>
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