[arp_responder]: Add IPv6 support#2723
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theasianpianist merged 4 commits intosonic-net:masterfrom Jan 5, 2021
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* Filter for both ARP and Neighbor Solicitation messages * Create Neighbor Adviretisement messages as configured to reply to NS messages Signed-off-by: Lawrence Lee <[email protected]>
lguohan
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Jan 4, 2021
Signed-off-by: Lawrence Lee <[email protected]>
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retest this please |
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retest this please |
prsunny
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Signed-off-by: Lawrence Lee <[email protected]>
Signed-off-by: Lawrence Lee <[email protected]>
kazinator-arista
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…lly (sonic-net#14750) src/sonic-swss * 96407be - (HEAD -> 202205, origin/202205) sonic-swss: Sync and program remote lag member status. (sonic-net#2730) (11 hours ago) [Sambath Kumar Balasubramanian] * 6051d33 - Fix race condition in sub-interface handling (sonic-net#2723) (11 hours ago) [Stephen Sun] * 7b95ec5 - [muxorch] handling multiple mux nexthops for route (sonic-net#2656) (11 hours ago) [Nikola Dancejic]
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Signed-off-by: Lawrence Lee [email protected]
Description of PR
Summary:
Fixes # (issue)
Type of change
Approach
What is the motivation for this PR?
ARP responder only supports IPv4 ARP requests/replies
How did you do it?
Add Neighbor Solicitation messages to the BPF query used to filter incoming packets
Distinguish ARP vs NDP messages based on length
Construct appropriate NA messages to reply to NS messages
How did you verify/test it?
Send NA messages from a machine to arp_responder running on a PTF, and verify that NS messages were sent back.
Run a set of nightly test cases to verify that existing ARP functionality was not impacted.
Any platform specific information?
Supported testbed topology if it's a new test case?
Documentation