Date: Sat, 7 Nov 1998 00:06:08 +0300 From: "Dmitry Eremin" <dmiter@sci-nnov.ru> To: "Bill Fenner" <fenner@parc.xerox.com> Cc: <freebsd-current@FreeBSD.ORG>, <freebsd-bugs@FreeBSD.ORG> Subject: Re: /kernel: arp: 192.168.1.188 is on de1 but got reply from 00:c0:4f:a4:81:2d on de0 Message-ID: <001a01be09c9$510c0010$0200000a@winhome.sci-nnov.ru>
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>Did the message get printed during your tcpdump, or was the tcpdump taken
>at a different time? Could you try to replicate this with both tcpdumps
>running at the same time (on different screens to not intersperse the
>output) and include the timestamps?
Both tcpdump runing in same time in defferent window.
$ tcpdump -tvvi de1 arp
22:55:35.096038 arp who-has 192.168.1.205 tell 192.168.1.48
22:55:35.096517 arp reply 192.168.1.205 is-at 0:10:4b:35:60:6c
$ tcpdump -tvvi de0 arp
22:55:35.096107 arp who-has 192.168.1.205 tell 192.168.1.48
>Does the ARP entry get installed correctly? i.e.
>1) Does "arp 192.168.1.188" show the right MAC address?
# arp 192.168.1.205
192.168.1.205 (192.168.1.205) -- no entry
>2) Does "route get 192.168.1.188" list the correct interface?
# route get 192.168.1.205
route to: 192.168.1.205
destination: 192.168.1.0
mask: 255.255.255.0
interface: de1
flags: <UP,DONE,CLONING>
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu
expire
0 0 0 0 0 0
1500 -24616
>Do you have any idea why the ARP request shows up on both interfaces?
I don't known hay this happening. This system has working as router.
May be it is forwarding?
sysctl say:
[...skip...]
net.inet.ip.forwarding: 1
net.inet.ip.redirect: 1
net.inet.ip.ttl: 64
net.inet.ip.sourceroute: 0
[...skip...]
net.link.ether.inet.prune_intvl: 300
net.link.ether.inet.max_age: 1200
net.link.ether.inet.host_down_time: 20
net.link.ether.inet.maxtries: 5
net.link.ether.inet.useloopback: 1
net.link.ether.inet.proxyall: 0
[...skip...]
>FreeBSD doesn't send ARP requests out multiple interfaces, so perhaps
>you have something funny going on at layer 2 (e.g. shared hub between
>the two different networks, or a broken switch)?
NO. We have't any devices between these networks.
de0: flags=88c3<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet xx.xx.xx.xx netmask 0xfffffffc broadcast xx.xx.xx.xx
^^^^^^^^^^^^^^^^^^
In the net de0 we have only TWO address. One have my FreeBSD computer and
second have Internet router!!!!
I want to attract you attention on my Ethernet cards. This is identical
card.
de0: <Digital 21140 Fast Ethernet> rev 0x12 int a irq 11 on pci0.12.0
de0: SMC 9332DST 21140 [10-100Mb/s] pass 1.2
de0: address 00:00:c0:b2:9f:d0
de0: enabling 10baseT port
de1: <Digital 21140 Fast Ethernet> rev 0x12 int a irq 10 on pci0.13.0
de1: SMC 9332DST 21140 [10-100Mb/s] pass 1.2
de1: address 00:00:c0:b8:a1:d0
de1: enabling 10baseT port
I think kernel doesn't correct work in this case.
Best regards, Dmitry.
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