From 2fccf241d76d6c03f79c152672089ff28d678384 Mon Sep 17 00:00:00 2001 From: Tim Young Date: Thu, 5 Oct 2017 11:09:31 -0500 Subject: [PATCH] Fix a null IP address issue --- EduNetworkBuilder/NetworkCard.cs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/EduNetworkBuilder/NetworkCard.cs b/EduNetworkBuilder/NetworkCard.cs index 773bc0c..97ee23f 100644 --- a/EduNetworkBuilder/NetworkCard.cs +++ b/EduNetworkBuilder/NetworkCard.cs @@ -707,7 +707,7 @@ namespace EduNetworkBuilder nl = myNet.GetLinkFromID(ConnectedLink); if (nl == null) break; - if (nPacket.sourceIP.GetIPString == NB.ZeroIPString && tPacket.MyType != PacketType.dhcp_request) return false; //We still have no IP. Do not send the packet out. + if ((nPacket.sourceIP == null || nPacket.sourceIP.GetIPString == NB.ZeroIPString) && tPacket.MyType != PacketType.dhcp_request) return false; //We still have no IP. Do not send the packet out. nPacket.StartOnLink(nl, WhereFrom); //This sends the packet down the link. myNet.addPacket(nPacket); if (tPacket.isFresh)