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-rw-r--r--src/vnet/interface.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/src/vnet/interface.c b/src/vnet/interface.c
index 278cd6e50c3..44ea52a870d 100644
--- a/src/vnet/interface.c
+++ b/src/vnet/interface.c
@@ -1639,13 +1639,20 @@ vnet_sw_interface_update_unnumbered (u32 unnumbered_sw_if_index,
}
else
{
- si->flags &= ~(VNET_SW_INTERFACE_FLAG_UNNUMBERED);
- si->unnumbered_sw_if_index = (u32) ~ 0;
+ /*
+ * Unless the interface is actually unnumbered, don't
+ * smash e.g. if_address_pool_index_by_sw_if_index
+ */
+ if (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
+ {
+ si->flags &= ~(VNET_SW_INTERFACE_FLAG_UNNUMBERED);
+ si->unnumbered_sw_if_index = (u32) ~0;
- ip4_main.lookup_main.if_address_pool_index_by_sw_if_index
- [unnumbered_sw_if_index] = ~0;
- ip6_main.lookup_main.if_address_pool_index_by_sw_if_index
- [unnumbered_sw_if_index] = ~0;
+ ip4_main.lookup_main
+ .if_address_pool_index_by_sw_if_index[unnumbered_sw_if_index] = ~0;
+ ip6_main.lookup_main
+ .if_address_pool_index_by_sw_if_index[unnumbered_sw_if_index] = ~0;
+ }
}
if (was_unnum != (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED))