Re: weird routing stuff ?!

From: Jesper Skriver (none@jesper--skriver.dk.lh.bsd-dk.dk)
Date: Wed 06 Jun 2001 - 21:20:59 CEST

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Date: Wed, 6 Jun 2001 21:20:59 +0200
From: Jesper Skriver <none@jesper--skriver.dk.lh.bsd-dk.dk>
To: bsd-dk@bsd-dk.dk
Subject: Re: weird routing stuff ?!

On Wed, Jun 06, 2001 at 09:13:13PM +0200, Jesper Skriver wrote:
> On Wed, Jun 06, 2001 at 09:06:01PM +0200, Kenneth Karlsson wrote:
> > Nedenstående scenarie dutter ikke, af uforklarlige årsager, jeg kan
> > sagtens trace den "rigtige" vej til 192.168.100.0 nettet, men ikke til
> > nogen af 172.16.x.x nettene ??? og jeg fatter det ikke. Det er en 4.3R
> > med IPFilter. Der er en TDC ProAccess ADSL på fxp0 og LAN på rl0.
> >
> > Nogen med et godt bud ?
>
> En bug, bemærk dog a 172.16.* er en class B (dvs. /16), ergo det
> er ikke netværks adresser du angiver, gør det nogen forskel hvis
> du explicit angiver netmasken ?

Det vil det gøre, alle nedenstående 172.16.* routes er host
routes, som det ses da Flags indeholder H

> > mail# netstat -rn
> > Routing tables
> >
> > Internet:
> > Destination Gateway Flags Refs Use Netif
> > Expire
> > default 192.168.1.1 UGSc 1 2 fxp0
> > 127.0.0.1 127.0.0.1 UH 0 0 lo0
> > 172.16.29.0 192.168.201.1 UGHS 0 0 rl0
> > 172.16.30.0 192.168.201.1 UGHS 0 0 rl0
> > 172.16.31.0 192.168.201.1 UGHS 0 0 rl0
> > 172.16.32.0 192.168.201.1 UGHS 0 0 rl0
> > 192.168.1 link#1 UC 0 0 fxp0 =>
> > 192.168.100 192.168.201.1 UGSc 1 6 rl0
> > 192.168.201 link#2 UC 0 0 rl0 =>
> > 192.168.202 192.168.201.1 UGSc 0 0 rl0

/Jesper

-- 
Jesper Skriver, jesper(at)skriver(dot)dk  -  CCIE #5456
Work:    Network manager   @ AS3292 (Tele Danmark DataNetworks)
Private: FreeBSD committer @ AS2109 (A much smaller network ;-)
One Unix to rule them all, One Resolver to find them,
One IP to bring them all and in the zone to bind them.

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