Patrik Flykt
65dd5e3105
In order to shut down networkd properly, the delegated routes added need to be removed properly, and as error reporting is wanted, the network link is needed in the debug output. Solve this by calling manager_dhcp6_prefix_remove_all(), which will remove each prefix stored in the Manager structure, and while doing that reference each link so that it isn't freed before the route removal callback is called. This in turn causes the network link to be referenced once more, and an explicit hashmap_remove() must be called to remove the network link from the m->links hashmap. Also, since the registered callback is not called when the DHCPv6 client is stopped with sd_dhcp6_client_stop(), an explicit call to dhcp6_lease_pd_prefix_lost() needs to be made to clean up any unreachable routes set up for the delegated prefixes.
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