[201811][dhcp_relay] Add support for DHCP client(s) on one VLAN and DHCP server(s) on another#2919

Merged

lguohan merged 8 commits intosonic-net:201811from

jleveque:uplink_downlink_support_isc-dhcp-relay_201811

May 18, 2019

Commits on May 17, 2019

Change URL for isc-dhcp source repository
jleveque
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Port upstream patches to isc-dhcp-relay to support upstream/downstream interfaces
jleveque
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Modify supervisor conf to generate dhcrelay commands with '-id' and '-iu' options
jleveque
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Comments; Also clean up jinja2 syntax
jleveque
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Patch relay to open one socket per interface and send to all servers on all upstream interfaces
jleveque
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Patch relay agent to properly forward BOOTREQUEST only on appropriate interface if it is a directed broadcast
jleveque
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Update patch to properly support interfaces with multiple IP addresses assigned
jleveque
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Pass --enable-use-sockets to configure instead of uncommenting USE_SOCKETS directly
jleveque
committed