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IPV6 address autoconfig and ipv6 address dhcp

D@1984
Level 1
Level 1

Hi,

wondering if someone here can help me to understand this: why would I still need #ipv6 address autoconfig if I already have #ipv6 address dhcp on the interface? shouldn't #ipv6 address dhcp be enough for the endpoint device to obtain an IP?

 

Thanks

1 Accepted Solution

Accepted Solutions

Harold Ritter
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Spotlight

Hi D@1984 ,

You do not need to configure "ipv6 address autoconfig" if you configure "ipv6 address dhcp", but bear in mind that DHCPv6 does not provide a default gateway address like DHCP does.

For this reason, you need to configure "ipv6 nd autoconfig default-route" so that the default route is configured from the received RA. This does not happen by default.

The "ipv6 nd autoconfig default-route" command is not needed when "ipv6 address autoconfig" is configured as it is the default behavior.

Regards,

Regards,
Harold Ritter, CCIE #4168 (EI, SP)

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1 Reply 1

Harold Ritter
Spotlight
Spotlight

Hi D@1984 ,

You do not need to configure "ipv6 address autoconfig" if you configure "ipv6 address dhcp", but bear in mind that DHCPv6 does not provide a default gateway address like DHCP does.

For this reason, you need to configure "ipv6 nd autoconfig default-route" so that the default route is configured from the received RA. This does not happen by default.

The "ipv6 nd autoconfig default-route" command is not needed when "ipv6 address autoconfig" is configured as it is the default behavior.

Regards,

Regards,
Harold Ritter, CCIE #4168 (EI, SP)