[559] in linux-net channel archive
Gated making my life hell
daemon@ATHENA.MIT.EDU (Drew Eckhardt)
Thu Jun 22 07:25:11 1995
To: linux-net@vger.rutgers.edu
Date: Thu, 22 Jun 1995 01:39:07 -0600
From: Drew Eckhardt <drew@poohsticks.org>
I'm running kernel 1.2.5, libc 4.7.2, and gated 3_0_3 from the Sunacm
archive (the ALPHA version didn't work at all for me).
My problem is that when gated creates static routes that have a netmask
of 255.255.255.240, they really get installed with a netmask of 255.255.255.0,
although it claims it installs them right. Specifics are as follows -
I have the following interfaces up all the time :
lo Link encap:Local Loopback
inet addr:127.0.0.1 Bcast:127.255.255.255 Mask:255.0.0.0
UP BROADCAST LOOPBACK RUNNING MTU:2000 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0
TX packets:21575 errors:1 dropped:0 overruns:0
eth0 Link encap:10Mbps Ethernet HWaddr 00:AA:00:0C:E8:34
inet addr:198.137.146.99 Bcast:198.137.146.111 Mask:255.255.255.240
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:359612 errors:10 dropped:0 overruns:0
TX packets:342576 errors:3403 dropped:0 overruns:0
Interrupt:10 Base address:0x320
dummy0 Link encap:10Mbps Ethernet HWaddr 00:00:00:00:00:00
inet addr:192.168.1.17 Bcast:192.168.1.31 Mask:255.255.255.240
UP BROADCAST RUNNING MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0
TX packets:0 errors:0 dropped:0 overruns:0
I run
ipfw add blocking deny all iface 192.168.1.1 from 0.0.0.0/0 to 0.0.0.0/0
to get a blackhole device until I can figure out/implement real reject routes.
The relevant symbolic hostnames are
198.137.146.26 hub-to-drew
198.137.146.27 drew-to-hub
198.137.146.99 chopper
I have the static routes
chopper.poohsti * 255.255.255.255 UH 1436 0 28 eth0
192.168.1.17 * 255.255.255.255 UH 1436 0 27 dummy0
localhost * 255.255.255.255 UH 1936 0 263 lo
drew-to-hub.vil * 255.255.255.255 UH 1936 0 0 lo
198.137.146.96 * 255.255.255.240 U 1436 0 330 eth0
setup to them at all times.
I also have an automagic PERL script, which tries to maintain a full-time SLIP
connection, setting the interface up as follows :
sl0 Link encap:VJ Serial Line IP
inet addr:198.137.146.27 P-t-P:198.137.146.26 Mask:255.255.255.240
UP POINTOPOINT RUNNING MTU:296 Metric:1
RX packets:328558 errors:0 dropped:0 compressed:217665
TX packets:367557 errors:0 dropped:0 compressed:255675
and adding the following routes :
route add hub-to-drew sl0;
route add drew-to-hub sl0;
route add -net default sl0;
with the first one being a bletcherous hack arround gated murdering my routing
table.
I run the following gated configuration :
tracefile "/var/adm/gated.log" replace size 1m files 2 ;
traceoptions kernel ;
# Define all dynamic interfaces here. Otherwise, we only deal with
# interfaces which were up when gated started.
interfaces {
define hub-to-drew pointtopoint drew-to-hub netmask 255.255.255.240 ;
} ;
# Route via RIP
rip yes {
nobroadcast ;
sourcegateways hub-to-drew;
} ;
# Setup "static" routes with worst preference to all dynamic nets which
# will propogate routing information to us. 192.168.1.17 is a virtual
# interface which has the kernel filtering code setup to block all packets.
#
# If we run gated with a similar static clause everywhere, packets won't
# make it off the machine they originate at :-)
static {
# I've tried mask here too; doesn't work
198.137.146.64 mask-length 28 gateway 192.168.1.17 preference 255 ;
198.137.146.32 mask-length 28 gateway 192.168.1.17 preference 255 ;
198.137.146.80 mask-length 28 gateway 192.168.1.17 preference 255 ;
198.137.146.48 mask-length 28 gateway 192.168.1.17 preference 255 ;
} ;
The problem :
When I startup gated with any of my statics, it makes an ICKY route
198.137.146.0 * 255.255.255.0 U 1436 0 0 dummy0
note the netmask there.
Manually adding routes like this
route add -net 198.137.146.64 netmask 255.255.255.240 dev dummy0
puts the right entries in the kernel; and the logging from gated says the
right magic is happening. Note the static routes that are added; and
then deleted when they're RIPed.
Of course, the thing actually added a bogus route, and it never goes away :-(
Jun 22 01:06:07 inet_routerid_notify: Router ID: 198.137.146.99
Jun 22 01:06:07
KERNEL ADD 127.0.0.1 mask 255.255.255.255 gateway 127.0.0.1 Direct <NoAge Refresh NoAdvise Active Retain>
Jun 22 01:06:07 krt_flash: Can not install 127/255 gateway 127.0.0.1: reject routes not supported
KERNEL ADD 198.137.146.96 mask 255.255.255.240 gateway 198.137.146.99 Direct <NoAge Refresh Int Active Retain>
KERNEL ADD 198.137.146.26 mask 255.255.255.255 gateway 198.137.146.27 Direct <NoAge Refresh Active Retain>
KERNEL ADD 198.137.146.27 mask 255.255.255.255 gateway 127.0.0.1 Direct <NoAge Refresh NoAdvise Active Retain Gateway>
KERNEL ADD 192.168.1.16 mask 255.255.255.240 gateway 192.168.1.17 Direct <NoAge Refresh Int Active Retain>
Jun 22 01:06:07
Jun 22 01:06:07 ***Routes are being installed in kernel
Jun 22 01:06:07
Jun 22 01:06:07 inet_routerid_notify: Router ID: 198.137.146.99
Jun 22 01:06:07
KERNEL ADD 198.137.146.64 mask 255.255.255.240 gateway 192.168.1.17 Static <NoAge Refresh Int Active Gateway>
KERNEL ADD 198.137.146.32 mask 255.255.255.240 gateway 192.168.1.17 Static <NoAge Refresh Int Active Gateway>
KERNEL ADD 198.137.146.80 mask 255.255.255.240 gateway 192.168.1.17 Static <NoAge Refresh Int Active Gateway>
KERNEL ADD 198.137.146.48 mask 255.255.255.240 gateway 192.168.1.17 Static <NoAge Refresh Int Active Gateway>
KERNEL ADD 198.137.146.19 mask 255.255.255.255 gateway 198.137.146.26 RIP <Refresh Int Active Gateway IfSubnetMask>
KERNEL ADD 198.137.146.20 mask 255.255.255.255 gateway 198.137.146.26 RIP <Refresh Int Active Gateway IfSubnetMask>
KERNEL ADD 198.137.146.21 mask 255.255.255.255 gateway 198.137.146.26 RIP <Refresh Int Active Gateway IfSubnetMask>
KERNEL ADD 198.137.146.22 mask 255.255.255.255 gateway 198.137.146.26 RIP <Refresh Int Active Gateway IfSubnetMask>
KERNEL DELETE 198.137.146.64 mask 255.255.255.240 gateway 192.168.1.17 Static <NoAge Refresh Int HoldDown Gateway>
KERNEL ADD 198.137.146.64 mask 255.255.255.240 gateway 198.137.146.26 RIP <Refresh Int Active Gateway IfSubnetMask>
KERNEL DELETE 198.137.146.32 mask 255.255.255.240 gateway 192.168.1.17 Static <NoAge Refresh Int HoldDown Gateway>
KERNEL ADD 198.137.146.32 mask 255.255.255.240 gateway 198.137.146.26 RIP <Refresh Int Active Gateway IfSubnetMask>
KERNEL DELETE 198.137.146.80 mask 255.255.255.240 gateway 192.168.1.17 Static <NoAge Refresh Int HoldDown Gateway>
KERNEL ADD 198.137.146.80 mask 255.255.255.240 gateway 198.137.146.26 RIP <Refresh Int Active Gateway IfSubnetMask>
KERNEL DELETE 198.137.146.48 mask 255.255.255.240 gateway 192.168.1.17 Static <NoAge Refresh Int HoldDown Gateway>
KERNEL ADD 198.137.146.48 mask 255.255.255.240 gateway 198.137.146.26 RIP <Refresh Int Active Gateway IfSubnetMask>
