Isso depende da política de configuração do provedor de VPN.
IP addresses make internetwork connections possible. They are like telephone numbers: both the sender and receiver must have an assigned number to connect. But with VPNs, there are actually two sets of addresses: the first set connects client and server on the public network. Once that connection is made, the second set connects client and server through the VPN tunnel.
Por exemplo:
You can configure both IPv4 and IPv6 address pools for the same group policy. If both versions of IP addresses are configured in the same group policy, clients configured for IPv4 will get an IPv4 address, clients configured for IPv6 will get an IPv6 address, and clients configured for both IPv4 and IPv6 addresses will get both an IPv4 and an IPv6 address.
Referências
- CLI de VPN da série Cisco ASA Guia de Configuração: Configurando Endereços IP para VPNs (pdf)
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Configuração do roteador duplo com um roteador VPN dedicado: tutorial passo-a-passo
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Linux Hacks: como: ipv6 -ipv6 tunnel e ip4-ipv6 tunnel no linux
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rede - Encaminhe o IPv6 da WAN para o servidor com o IPv4 - Falha do servidor
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Testes e verificações de VPN - Guia de instruções final | Restaurar Privacidade