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authorKlement Sekera <ksekera@cisco.com>2021-06-21 16:04:40 +0200
committerOle Tr�an <otroan@employees.org>2021-06-22 13:23:38 +0000
commit79699b00c155f9f5b776451a55e151befa3ba33b (patch)
tree14719b24cd6f3bb673e6ec1f92d8696f6d17ada6 /src
parentc73f3299ad765c87f57a0a810819d42c11b04d5e (diff)
nat: don't drop packet with ttl=1 if output feature
TTL was already decremented in ip4-rewrite so it's okay if it's 1. Type: fix Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: I587dc343737c15247eb62837a06d5e44c0d11acc
Diffstat (limited to 'src')
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_in2out.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_in2out.c b/src/plugins/nat/nat44-ed/nat44_ed_in2out.c
index f3f3ffa13b0..426b6eeba5c 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_in2out.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed_in2out.c
@@ -1030,7 +1030,7 @@ nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm,
fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index0);
lookup.fib_index = rx_fib_index0;
- if (PREDICT_FALSE (ip0->ttl == 1))
+ if (PREDICT_FALSE (!is_output_feature && ip0->ttl == 1))
{
vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
@@ -1308,7 +1308,7 @@ nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t *vm,
rx_fib_index0 =
fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index0);
- if (PREDICT_FALSE (ip0->ttl == 1))
+ if (PREDICT_FALSE (!is_output_feature && ip0->ttl == 1))
{
vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,