Merge release-20210201.0-58-g39251f31c (automated)

1 files changed, 11 insertions, 0 deletions

diff --git a/pkg/tcpip/stack/stack.go b/pkg/tcpip/stack/stack.go
index 46c1817ea..674c9a1ff 100644
--- a/pkg/tcpip/stack/stack.go
+++ b/pkg/tcpip/stack/stack.go
@@ -1466,6 +1466,17 @@ func (s *Stack) CheckNetworkProtocol(protocol tcpip.NetworkProtocolNumber) bool
 	return ok
 }
 
+// CheckDuplicateAddress performs duplicate address detection for the address on
+// the specified interface.
+func (s *Stack) CheckDuplicateAddress(nicID tcpip.NICID, protocol tcpip.NetworkProtocolNumber, addr tcpip.Address, h DADCompletionHandler) (DADCheckAddressDisposition, tcpip.Error) {
+	nic, ok := s.nics[nicID]
+	if !ok {
+		return 0, &tcpip.ErrUnknownNICID{}
+	}
+
+	return nic.checkDuplicateAddress(protocol, addr, h)
+}
+
 // CheckLocalAddress determines if the given local address exists, and if it
 // does, returns the id of the NIC it's bound to. Returns 0 if the address
 // does not exist.