X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fdhcp%2Fdhcp6_proxy_node.c;h=272c379b6a3bec46e1e0feb6b5190f39500533a9;hb=753b96f31b0f34983bbc213516f1a05825d868a8;hp=929b49e2b414327fc043c99c52ec233162eb36fc;hpb=02bfd641b69aab83397e217b9ca4e35a6aab05c8;p=vpp.git

diff --git a/src/plugins/dhcp/dhcp6_proxy_node.c b/src/plugins/dhcp/dhcp6_proxy_node.c
index 929b49e2b41..272c379b6a3 100644
--- a/src/plugins/dhcp/dhcp6_proxy_node.c
+++ b/src/plugins/dhcp/dhcp6_proxy_node.c
@@ -315,8 +315,9 @@ dhcpv6_proxy_to_server_input (vlib_main_t * vm,
 
 	link_address_set:
 
-	  if ((b0->current_length + sizeof (*id1) + sizeof (*vss1) +
-	       sizeof (*cmac)) > vlib_buffer_get_default_data_size (vm))
+	  if ((b0->current_data + b0->current_length + sizeof (*id1) +
+	       sizeof (*vss1) + sizeof (*cmac)) >
+	      vlib_buffer_get_default_data_size (vm))
 	    {
 	      error0 = DHCPV6_PROXY_ERROR_PKT_TOO_BIG;
 	      next0 = DHCPV6_PROXY_TO_SERVER_INPUT_NEXT_DROP;