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Two Kinds of IPv6 VPN Address (1) VPN-Local Address(VLA) VPN-Local Address is similar to the site-local address. Valid only within VPN Perfix of VPN-Local Address should be sent by routing protocol to other site of this VPN First kind of VPN-Local address structure is this figure. The other VPN-Local address structure is ULA which defined in draft-ietf-ipv6-unique-local-addr-09.txt(RFC4193) 1111111011 reserved Subnet ID Interface ID 10 bits 38 bits 16 bits 64 bits |