If DHCP is disabled in config, flood DHCP requests in the VN

Change-Id: I81f27a921b1e88ba55dbf0b5ae2f6de0ce501dbe
* Add a flag in route to trap GARP packets hitting that route

Change-Id: Ifd77b2456b91104fe8c2eed5e5e45397fb76453a
- Changes to support cross connect without scripts
  - agent alive/dead detected based on addition of pkt0 vif and removal of
    pkt0 interface from the system (OS)
  - on agent's death, all vhost interface and their corresponding physical
    interfaces are put on cross connect mode where the traffic will still
    pass through vrouter
  - from the time of reset till vhost gets added back again, traffic moves
    directly from physical interface to vhost
  - once vhost interface is added, traffic flows normally through vrouter

Change-Id: I7cacebc5432347e11fc15213edd22f372cf6c9ef
- Vlan tagged packets are handled different between 2.6 (Centos) kernel
and later kernels. To make handling uniform in all platforms, push the
vlan header in the packet for the later kernels

Change-Id: I06fe6bb06cd5ab483f88606a402f826510815cb5
- BUG:1337295- NULL terminate getopt_long option list

Change-Id: I50463864ef515d5706b0b27206d2583b83bbfca9
Merge "- BUG:1337295- NULL terminate getopt_long option list"
- Ensure that inner header checksums are correct on the wire when the outer
header is UDP (MPLSoUDP or VXLAN).

- Outer UDP header source port is now a hash of inner header 5-tuple.

Bug 1338326

Change-Id: I8e1519b562faef30523a297e42c2a4a64759e6f4
- interface notifier argument changed in 3.11 kernel. Add #ifdefs
to accommodate that change

Change-Id: Ieb1b0512c9531fe0e67a562c92f3c91d93c8d540
Merge "- Ensure that inner header checksums are correct on the wire when the outer header is UDP (MPLSoUDP or VXLAN)."
Make vrouter coexist with Linux bridge (and not coexist with OVS).

Bug 1338900

Change-Id: Ie2455a070acd03f55d0a920a4495fe2fded1ab74
BUG:1336717
Do trap + forward the packet when the packet arrives from an ECMP source
that was different from the destination of the forward flow

[ forward port into mainline ]

Change-Id: If9283fde17f4353cd483b0f5b87100e82a4c8fca