NAME

  Test v6LC.2.1.15 - Invalid Neighbor Advertisement Handling
  Part C: NUT receives invalid NA (Invalid Checksum)

Purpose

   Verify that a node takes the proper actions upon receipt of an invalid Neighbor Advertisement.

References

  * [ND]  Section 7.1.2

Resource Requirements

  * Packet generator
  * Monitor to capture packets

Test Setup

  No Common Test Setup is performed. The Common Test Cleanup procedure is
  performed after each part.

Neighbor Advertisement A
IPv6 Header
Next Header: 58
Source Address: TN1's Link-local Address
Destination Address: all-nodes multicast address

Neighbor Advertisement
ICMP Code: 0
ICMP Checksum: Valid
Router flag: 0
Solicited flag: 0
Override flag: 1
Target Address: TN1's link-local address
TLLOPT: TN1's MAC address

Neighbor Advertisement A
IPv6 Header Next Header: 58 Source Address: TN1's Link-local Address Destination Address: all-nodes multicast address
Neighbor Advertisement ICMP Code: 0 ICMP Checksum: Valid Router flag: 0 Solicited flag: 0 Override flag: 1 Target Address: TN1's link-local address TLLOPT: TN1's MAC address

Procedure

  Part C: NUT receives invalid NA (Invalid Checksum)
   9. TN1 transmits an Echo Request to the NUT.
   10. Observe the packets transmitted by the NUT.
   11. Configure TN1 to transmit Neighbor Advertisement A with an invalid checksum.
   12. Observe packet captures on Link B.

Observable Results

  Part C

   Step 10:
   The NUT should transmit a Neighbor Solicitation to TN1's solicited-node multicast
   address.

   Step 12:
   The NUT should ignore the Neighbor Advertisement sent by TN1 and should
   continue to transmit Neighbor Solicitations to TN1's solicited-node multicast address.

Possible Problems

  * None.