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Index: head/UPDATING
===================================================================
--- head/UPDATING
+++ head/UPDATING
@@ -26,6 +26,10 @@
world, or to merely disable the most expensive debugging functionality
at runtime, run "ln -s 'abort:false,junk:false' /etc/malloc.conf".)
+20201108:
+ Default value of net.add_addr_allfibs has been changed to 0.
+ If you have multi-fib configuration and rely on existence of all
+ interface routes in every fib, you need to set the above sysctl to 1.
20201030:
The internal pre-processor in the calendar(1) program has been
extended to support more C pre-processor commands (e.g. #ifdef, #else,
Index: head/sys/net/route/route_ifaddrs.c
===================================================================
--- head/sys/net/route/route_ifaddrs.c
+++ head/sys/net/route/route_ifaddrs.c
@@ -61,7 +61,7 @@
* By default, interface address routes are added to the fib of the interface.
* Once set to non-zero, adds interface address route to all fibs.
*/
-VNET_DEFINE(u_int, rt_add_addr_allfibs) = 1;
+VNET_DEFINE(u_int, rt_add_addr_allfibs) = 0;
SYSCTL_UINT(_net, OID_AUTO, add_addr_allfibs, CTLFLAG_RWTUN | CTLFLAG_VNET,
&VNET_NAME(rt_add_addr_allfibs), 0, "");
Index: head/sys/net/route/route_tables.c
===================================================================
--- head/sys/net/route/route_tables.c
+++ head/sys/net/route/route_tables.c
@@ -183,6 +183,11 @@
new_rt_tables = mallocarray(num_tables * (AF_MAX + 1), sizeof(void *),
M_RTABLE, M_WAITOK | M_ZERO);
+ if ((num_tables > 1) && (V_rt_add_addr_allfibs == 0))
+ printf("WARNING: Adding ifaddrs to all fibs has been turned off "
+ "by default. Consider tuning %s if needed\n",
+ "net.add_addr_allfibs");
+
/*
* Current rt_tables layout:
* fib0[af0, af1, af2, .., AF_MAX]fib1[af0, af1, af2, .., Af_MAX]..

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