ip: fix assert in ip4_ttl_inc

[vpp.git] / src / vnet / ip / ip4_forward.c

diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c
index 3c67bb3..3556d35 100644 (file)
--- 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.