Arp problems

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Hello!

We have strange arp problems in our net and I hope you can help us.

Topology:

Cisco (x.x.225.1)
| Network (x.x.255.0/24)
|
| Some hosts
|
|(x.x.225.254)
Router (Linux 2.4.17)
|(x.x.221.2)
|
|Network (x.x.221.0/24)
|
| Some hosts
-


If I snoop on network 255.0 I see from time to time packets like this:
ARP-REQ from[<MAC>] x.x.221.2 to [<allzero>] x.x.225.13
APR-REP from [<MAC>] x.x.225.13 to [<MAC>] x.x.221.2

1. IMHO the LinuxRouter should use his 225 Network address to query for a 
host in the 225 network.

2. echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter doesn't help.

Is there a patch to correct this 'misbehaviour' ?

Best Regards,
G. Jasny
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