某局点 S5560 S-EI ipv6 直连 ping 不通问题

设备直连

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设备直连，在vlan 虚接口上配置 ipv6地址，直连ping 不通，带源ping 显示 invalid source IPV6 address 

一般带源ping，有  invalid source IPV6 address ，说明本端配置的 ipv6地址未生效，在设备上查看全球单播地址 为 TENTATIVE状态，一般是地址冲突导致

<H3C>dis ipv6 interface Vlan-interface 140

 Vlan-interface140 current state: UP Line protocol current state: UP 

IPv6 is enabled, link-local address is FE80::72C6:DDFF:FE81:C253 [DUPLICATE] 

 Global unicast address(es): 240A:4021:900:8AF1:2FF::29, subnet is 240A:4021:900:8AF1:2FF::/80 [TENTATIVE] 

 Joined group address(es): FF02::1 FF02::2 FF02::1:FF00:29 FF02::1:FF81:C253 

 MTU is 1500 bytes

 ND DAD is enabled, number of DAD attempts: 1 ND reachable time is 1200000 milliseconds ND retransmit interval is 1000 milliseconds Hosts use stateless autoconfig for addresses

在设备上开启debug 观察，设备收到了自己发出去的NS报文：

*Jan 15 23:31:54:894 2013 H3C ND/7/ND_PACKET:

 Sent NS packet:

 Interface: Vlan140           First VLAN ID: 0   Second VLAN ID: 0

SrcEthMAC: 0000-0000-0000    SrcIP: ::

 DstEthMAC: 0000-0000-0000    DstIP: ff02::1:ff81:c25a

LinkId: 0xffff    VsiIndex: 0xffffffff

*Jan 15 23:31:54:895 2013 H3C ND/7/ND_PACKET:

 Received NS packet:  //我们收到了自己发出去的报文，说明组网内有环，这就是为啥我们不管配置啥地址都冲突原因

 Interface: Vlan140           First VLAN ID: 140   Second VLAN ID: 0

SrcEthMAC: 70c6-dd81-c25a    SrcIP: ::  //查看这个源mac发现是本地接口mac地址

 DstEthMAC: 3333-ff81-c25a    DstIP: ff02::1:ff81:c25a  //这个mac是发出去的时候带的组播mac

LinkId: 0xffff    VsiIndex: 0xffffffff

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