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0001507: NIC should answer to ARP requests also to source ip's of unknown subnets - MantisBT Endian Bugtracker
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IDProjectCategoryView StatusDate SubmittedLast Update
0001507Endian FirewallNetwork related (VPN, uplinks)public2008-12-10 17:132009-10-27 12:21
Reporterpeter-endian 
Assigned Topeter-endian 
PrioritynormalSeverityfeatureReproducibilitysometimes
StatusclosedResolutionfixed 
PlatformOSOS Version
Product Version 
Target Version2.3Fixed in Version2.3 
Summary0001507: NIC should answer to ARP requests also to source ip's of unknown subnets
Descriptionsome modems send ARP requests with source ip addresses which are not in the subnet the firewall holds. Mostly this will be modems which do proxy arp.

It would be a good compromise to do this change:
-net.ipv4.conf.all.arp_ignore = 2
+net.ipv4.conf.all.arp_ignore = 1

in order to make the interface answer only to ARP requests of it's own ip address but to answer also to unknown source ip's
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- Issue History
Date Modified Username Field Change
2008-12-10 17:13 peter-endian New Issue
2008-12-10 17:13 peter-endian Assigned To => peter-endian
2008-12-10 17:13 peter-endian Status new => resolved
2008-12-10 17:13 peter-endian Fixed in Version => 2.3
2008-12-10 17:13 peter-endian Resolution open => fixed
2009-10-27 12:01 peter-endian Status resolved => closed
2009-10-27 12:21 peter-endian Target Version future => 2.3

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