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Subject: [gaio@sv.lnf.it: Strange... doubled interfaces!]
From: Marco Gaiarin <gaio,AT,sv,DOT,lnf,DOT,it>
Date: Thu, 1 Aug 2002 17:24:51 +0200

Boh... i've sended yesterday and i've not seen on list today...

----- Forwarded message from Marco Gaiarin <gaio,AT,sv,DOT,lnf,DOT,it> -----
From: Marco Gaiarin <gaio,AT,sv,DOT,lnf,DOT,it>
Date: Wed, 31 Jul 2002 18:21:07 +0200
To: cipe-l,AT,inka,DOT,de
Subject: Strange... doubled interfaces!
Organization: La Nostra Famiglia - Polo FVG

I've a 486 that do forewall and VPN for a local branch of my
organization.

This morning was a potato (debian 2.2), kernel 2.4.18, cipe 1.5.2free-9
(in unstable) recompiled for potato.

I've upgraded to woody (debian 3.0), recompiled the kernel (again
2.4.18) and cipe modules from again 1.5.2free-9, but recompiled for
woody.
[note that i've a similar machine at other end, but a P150]

Now:

fouc:~# ifconfig 
cipcb7    Link encap:IPIP Tunnel  HWaddr   
          inet addr:10.254.27.7  P-t-P:10.254.7.27 Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP  MTU:1442  Metric:1
          RX packets:12 errors:3 dropped:0 overruns:0 frame:3
          TX packets:13 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:1744 (1.7 KiB)  TX bytes:1700 (1.6 KiB)

cipcb10   Link encap:IPIP Tunnel  HWaddr   
          inet addr:10.254.27.10  P-t-P:10.254.10.27 Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP  MTU:1442  Metric:1
          RX packets:148 errors:4 dropped:0 overruns:0 frame:4
          TX packets:181 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:18984 (18.5 KiB)  TX bytes:25212 (24.6 KiB)

cipcb1    Link encap:IPIP Tunnel  HWaddr   
          inet addr:10.254.27.1  P-t-P:10.254.1.27 Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP  MTU:1442  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
cipcb7    Link encap:IPIP Tunnel  HWaddr   
          inet addr:10.254.27.7  P-t-P:10.254.7.27 Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP  MTU:1442  Metric:1

cipcb10   Link encap:IPIP Tunnel  HWaddr   
          inet addr:10.254.27.10  P-t-P:10.254.10.27 Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP  MTU:1442  Metric:1

cipcb1    Link encap:IPIP Tunnel  HWaddr   
          inet addr:10.254.27.1  P-t-P:10.254.1.27 Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP  MTU:1442  Metric:1

eth0      Link encap:Ethernet  HWaddr 00:50:BA:A9:28:7E  
          inet addr:10.27.1.3  Bcast:10.27.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:149908 errors:0 dropped:0 overruns:0 frame:0
          TX packets:268196 errors:0 dropped:0 overruns:0 carrier:0
          collisions:613 txqueuelen:100 
          RX bytes:10498550 (10.0 MiB)  TX bytes:397587664 (379.1 MiB)
          Interrupt:11 

eth1      Link encap:Ethernet  HWaddr 00:20:AF:1C:27:48  
          inet addr:192.168.1.2  Bcast:192.168.1.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:266383 errors:5 dropped:0 overruns:4 frame:5
          TX packets:143296 errors:0 dropped:0 overruns:0 carrier:0
          collisions:1 txqueuelen:100 
          RX bytes:397479109 (379.0 MiB)  TX bytes:9928184 (9.4 MiB)
          Interrupt:10 Base address:0x300 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

Note the double cipcb interfaces, but rather empty one.
Routing are OK.

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
10.254.7.27     0.0.0.0         255.255.255.255 UH    0      0        0 cipcb7
10.254.1.27     0.0.0.0         255.255.255.255 UH    0      0        0 cipcb1
10.254.10.27    0.0.0.0         255.255.255.255 UH    0      0        0 
cipcb10
10.254.10.0     10.254.10.27    255.255.255.0   UG    0      0        0 
cipcb10
192.5.0.0       10.254.10.27    255.255.255.0   UG    0      0        0 
cipcb10
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
10.27.1.0       0.0.0.0         255.255.255.0   U     0      0        0 eth0
10.254.1.0      10.254.1.27     255.255.255.0   UG    0      0        0 cipcb1
192.0.0.0       10.254.10.27    255.255.255.0   UG    0      0        0 
cipcb10
192.2.0.0       10.254.7.27     255.255.255.0   UG    0      0        0 cipcb7
10.254.7.0      10.254.7.27     255.255.255.0   UG    0      0        0 cipcb7
10.0.0.0        10.254.10.27    255.0.0.0       UG    0      0        0 
cipcb10
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 eth1

And cipe works fine.

What happens?!

[could be the promoiscuous mode of eth1?]

Thanks.

-- 
dott. Marco Gaiarin                                 GNUPG Key ID: 240A3D66
  Associazione ``La Nostra Famiglia''                http://www.sv.lnf.it/
  Polo FVG  -  Via della Bontà, 7 - 33078  -  San Vito al Tagliamento (PN)
  gaio(at)sv.lnf.it             tel +39-0434-842711    fax +39-0434-842797

            Supporta il disegno di legge sul software libero!
          http://www.softwarelibero.it/news/news020417_01.shtml

----- End forwarded message -----

-- 
dott. Marco Gaiarin                                 GNUPG Key ID: 240A3D66
  Associazione ``La Nostra Famiglia''                http://www.sv.lnf.it/
  Polo FVG  -  Via della Bontà, 7 - 33078  -  San Vito al Tagliamento (PN)
  gaio(at)sv.lnf.it             tel +39-0434-842711    fax +39-0434-842797

            Supporta il disegno di legge sul software libero!
          http://www.softwarelibero.it/news/news020417_01.shtml





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