shorewall_code/Shorewall/known_problems.txt
2009-12-20 07:31:35 -08:00

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1) In kernel 2.6.31, the handling of the rp_filter interface option was
changed incompatibly. Previously, the effective value was determined
by the setting of net.ipv4.config.dev.proxy_arp logically ANDed with
the setting of net.ipv4.config.all.proxy_arp.
Beginning with kernel 2.6.31, the value is the arithmetic MAX of
those two values.
Given that Shorewall sets net.ipv4.config.all.proxy_arp to 1 if
there are any interfaces specifying 'routefilter', specifying
'routefilter' on any interface has the effect of setting the option
on all interfaces.
A workaround for this problem is included in Shorewall 4.4.5.1.