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CLOUDSTACK-8326: Always fill UDP checksums in DHCP replies in VRIn some cases the UDP checksums in packets from DHCP servers are incorrect. This is a problem for some DHCP clients that ignore packets with bad checksums. This patch inserts an iptables rule to ensure DHCP servers always send packets with correct checksums. Due to this bug DHCP offers are sometimes not accepted by Instances. The end-result without this fix is no connectivity for the Instance due to the lack of a IPv4 address. Signed-off-by: Wido den Hollander <wido@widodh.nl> * pr/1743: CLOUDSTACK-8326: Always fill UDP checksums in DHCP replies in VR Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>