[ipv6] Support/Use DHCPv6 assigned address if there is no Prefix option in RA #1163
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…on in RA It is a valid case that RAs dont have any Prefix options but still set the router/gateway when they are received. In such a case, the ipv6 address received via DHCPv6 needs to use the RA sender address as gateway. Signed-off-by: Guvenc Gulce <[email protected]>
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It is a valid case that RAs dont have any Prefix options but still set the router/gateway when they are received. In such a case, the ipv6 address received via DHCPv6 needs to use the RA sender address as gateway.
This is outlined in the linked RFC 4861 section 6.3.4
https://www.rfc-editor.org/rfc/rfc4861#section-6.3.4
The current implementation doesnt take into the consideration the received RA sender address as a gateway, as required by
RFC 4861, when there is no Prefix option attached to the RA message.
This PR is an attempt to correct this behavior.
This is related to the issue here as well: #1141 and to #449