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-rw-r--r--src/vnet/ip/ip4_forward.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c
index 3c67bb3d4e7..3556d357f50 100644
--- a/src/vnet/ip/ip4_forward.c
+++ b/src/vnet/ip/ip4_forward.c
@@ -2055,7 +2055,9 @@ ip4_ttl_inc (vlib_buffer_t * b, ip4_header_t * ip)
ttl += 1;
ip->ttl = ttl;
- ASSERT (ip4_header_checksum_is_valid (ip));
+ ASSERT (ip4_header_checksum_is_valid (ip) ||
+ (vnet_buffer (b)->oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM) ||
+ (vnet_buffer (b)->oflags & VNET_BUFFER_OFFLOAD_F_OUTER_IP_CKSUM));
}
/* Decrement TTL & update checksum.