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MFC r196649

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Prefix on-link verification is being performed on statically
configured prefixes. Since these statically configured prefixes
do not have any associated advertising routers, these prefixes
are treated as unreachable and those prefix routes are deleted
from the routing table. Therefore bypass prefixes that are not
learned from router advertisements during prefix on-link check.

Reviewed by:	hrs
Approved by:	re
This commit is contained in:
Qing Li 2009-08-30 22:44:12 +00:00
parent ba3ae75b3c
commit 87d2d9c556
1 changed files with 9 additions and 0 deletions
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9
sys/netinet6/nd6_rtr.c
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@ -1415,6 +1415,9 @@ pfxlist_onlink_check()
if (pr->ndpr_raf_onlink == 0)
continue;
if (pr->ndpr_raf_auto == 0)
continue;
if ((pr->ndpr_stateflags & NDPRF_DETACHED) == 0 &&
find_pfxlist_reachable_router(pr) == NULL)
pr->ndpr_stateflags |= NDPRF_DETACHED;
@ -1431,6 +1434,9 @@ pfxlist_onlink_check()
if (pr->ndpr_raf_onlink == 0)
continue;
if (pr->ndpr_raf_auto == 0)
continue;
if ((pr->ndpr_stateflags & NDPRF_DETACHED) != 0)
pr->ndpr_stateflags &= ~NDPRF_DETACHED;
}
@ -1454,6 +1460,9 @@ pfxlist_onlink_check()
if (pr->ndpr_raf_onlink == 0)
continue;
if (pr->ndpr_raf_auto == 0)
continue;
if ((pr->ndpr_stateflags & NDPRF_DETACHED) != 0 &&
(pr->ndpr_stateflags & NDPRF_ONLINK) != 0) {
if ((e = nd6_prefix_offlink(pr)) != 0) {