diff options
Diffstat (limited to 'src/vnet/ip/ip6_forward.c')
| -rw-r--r-- | src/vnet/ip/ip6_forward.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/vnet/ip/ip6_forward.c b/src/vnet/ip/ip6_forward.c index b53cdc47346..c45b65fd22d 100644 --- a/src/vnet/ip/ip6_forward.c +++ b/src/vnet/ip/ip6_forward.c @@ -215,6 +215,50 @@ ip6_add_del_interface_address (vlib_main_t * vm, vec_elt (im->fib_index_by_sw_if_index, sw_if_index)); vec_add1 (addr_fib, ip6_af); + /* *INDENT-OFF* */ + if (!is_del) + { + /* When adding an address check that it does not conflict + with an existing address on any interface in this table. */ + ip_interface_address_t *ia; + vnet_sw_interface_t *sif; + + pool_foreach(sif, vnm->interface_main.sw_interfaces, + ({ + if (im->fib_index_by_sw_if_index[sw_if_index] == + im->fib_index_by_sw_if_index[sif->sw_if_index]) + { + foreach_ip_interface_address + (&im->lookup_main, ia, sif->sw_if_index, + 0 /* honor unnumbered */ , + ({ + ip6_address_t * x = + ip_interface_address_get_address + (&im->lookup_main, ia); + if (ip6_destination_matches_route + (im, address, x, ia->address_length) || + ip6_destination_matches_route (im, + x, + address, + address_length)) + { + vnm->api_errno = VNET_API_ERROR_DUPLICATE_IF_ADDRESS; + return + clib_error_create + ("failed to add %U which conflicts with %U for interface %U", + format_ip6_address_and_length, address, + address_length, + format_ip6_address_and_length, x, + ia->address_length, + format_vnet_sw_if_index_name, vnm, + sif->sw_if_index); + } + })); + } + })); + } + /* *INDENT-ON* */ + { uword elts_before = pool_elts (lm->if_address_pool); |