diff options
| author |   Neale Ranns <nranns@cisco.com> | 2017-08-10 11:34:12 -0700 |
|---|---|---|
| committer |   Florin Coras <florin.coras@gmail.com> | 2017-08-11 02:55:13 +0000 |
| commit | e8bad978a107bf312e194ba488603f074351e29e (patch) | |
| tree | 1c30ac18418d92be9bad4ebab3651c51aed55c2a /src/vnet/unix | |
| parent | 543852a46ce107243ed92254bd88b87ca82bbd0b (diff) | |
the automatic addition of IP address to the magic TAP interface should only happen for one table
Change-Id: I99d3e9227c33ee42b90e4842080960fcc6c03913
Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/unix')
| -rw-r--r-- | src/vnet/unix/tuntap.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/vnet/unix/tuntap.c b/src/vnet/unix/tuntap.c index ac674653df4..2c403679349 100644 --- a/src/vnet/unix/tuntap.c +++ b/src/vnet/unix/tuntap.c @@ -45,6 +45,7 @@ #include <vlib/unix/unix.h> #include <vnet/ip/ip.h> +#include <vnet/fib/fib_table.h> #include <vnet/ethernet/ethernet.h> #include <vnet/devices/devices.h> @@ -692,6 +693,16 @@ tuntap_ip4_add_del_interface_address (ip4_main_t * im, if (tm->have_normal_interface || tm->dev_tap_fd < 0) return; + /* if the address is being applied to an interface that is not in + * the same table/VRF as this tap, then ignore it. + * If we don't do this overlapping address spaces in the diferent tables + * breaks the linux host's routing tables */ + if (fib_table_get_index_for_sw_if_index(FIB_PROTOCOL_IP4, + sw_if_index) != + fib_table_get_index_for_sw_if_index(FIB_PROTOCOL_IP4, + tm->sw_if_index)) + return; + /** See if we already know about this subif */ memset (&subif_addr, 0, sizeof (subif_addr)); subif_addr.sw_if_index = sw_if_index; @@ -799,6 +810,16 @@ tuntap_ip6_add_del_interface_address (ip6_main_t * im, if (tm->have_normal_interface || tm->dev_tap_fd < 0) return; + /* if the address is being applied to an interface that is not in + * the same table/VRF as this tap, then ignore it. + * If we don't do this overlapping address spaces in the diferent tables + * breaks the linux host's routing tables */ + if (fib_table_get_index_for_sw_if_index(FIB_PROTOCOL_IP6, + sw_if_index) != + fib_table_get_index_for_sw_if_index(FIB_PROTOCOL_IP6, + tm->sw_if_index)) + return; + /* See if we already know about this subif */ memset (&subif_addr, 0, sizeof (subif_addr)); subif_addr.sw_if_index = sw_if_index; |