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This patch enables and adds support for handling router advertisements carrying a prefix information option with the flag A unset i.e. the SLAAC disabled, but the L flag set i.e. on-link info. When this is the case, we remove all addresses covered by the prefix received, select the one with the longest prefixlen and reinsert it updating its prefixlen to match the packet info. This is useful when the interface address is set by dhcpv6 and default to /128 when the assigned prefix is actually /64 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
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This patch enables and adds support for handling router advertisements carrying a prefix information option with the flag A unset i.e. the SLAAC disabled, but the L flag set i.e. on-link info.
When this is the case, we remove all addresses covered by the prefix received, select the one with the longest prefixlen and reinsert it updating its prefixlen to match the packet info.
This is useful when the interface address is set by dhcpv6 and default to /128 when the assigned prefix is actually /64