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more verbose assert message when MTU exceeded

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This commit is contained in:
Tom Henderson
2010-12-29 10:14:43 -08:00
parent 91709b97eb
commit 6ecdd39227
1 changed files with 4 additions and 1 deletions
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5
src/internet-stack/ipv4-l3-protocol.cc
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@@ -695,7 +695,10 @@ Ipv4L3Protocol::SendRealOut (Ptr<Ipv4Route> route,
Ptr<Ipv4Interface> outInterface = GetInterface (interface);
NS_LOG_LOGIC ("Send via NetDevice ifIndex " << outDev->GetIfIndex () << " ipv4InterfaceIndex " << interface);
NS_ASSERT (packet->GetSize () <= outInterface->GetDevice ()->GetMtu ());
NS_ASSERT_MSG (packet->GetSize () <= outInterface->GetDevice ()->GetMtu (),
"Packet size " << packet->GetSize () << " exceeds device MTU "
<< outInterface->GetDevice ()->GetMtu ()
<< " for IPv4; fragmentation not supported");
if (!route->GetGateway ().IsEqual (Ipv4Address ("0.0.0.0")))
{
if (outInterface->IsUp ())