Bug ID: 6638327 An IRE with RTF_BLACKHOLE set can still return ICMP

Bug ID	6638327
Synopsis	An IRE with RTF_BLACKHOLE set can still return ICMP_UNREACHABLE in forwarding path
State	10-Fix Delivered (Fix available in build)
Category:Subcategory	kernel:tcp-ip
Keywords	rtiq_regression
Responsible Engineer	Jonathan Anderson
Reported Against	snv_79
Duplicate Of
Introduced In	solaris_nevada
Commit to Fix	snv_83
Fixed In	snv_83
Release Fixed	solaris_nevada(snv_83) , solaris_10u7(s10u7_01) (Bug ID:2160557)
Related Bugs	6385609 , 6656657
Submit Date	6-December-2007
Last Update Date	13-February-2008
Description	Routing entries marked with blackhole flag are meant to silently discard packets which would use them. This works fine when the host is trying to send via a blackholed route. However, when the node is setup as a router and is forwarding packets this does not happen. If a received packet would be forwarded via blackhole route and ICMP Unreachable is still returned to the originating host.
Work Around	None
Comments	N/A

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