Yu Watanabe
9e7d91ed97
The setting IPv6AcceptRA= is defaults to yes, hence, even if a .network file for an interface has static IP address configuration, it may takes few seconds for the interface being configured state, as NDisc for the interface needs to be finished. That makes wait-online.service needlessly slow. Typically, such delay is not necessary for statically configured networks. Let's make the required condition slightly relaxed; if a .network file has static IP address configurations, then let's make the matching interface enter the 'configured' state soon after the static addresses configured on the interface. Note, this does not change the default for IPv6AcceptRA=, hence, NDisc still runs on interfaces by default. So, addresses, routes, DNS servers, and so on based on RA will be assigned on interfaces later. Strictly speaking, this breaks backward compatibility, but the previous behavior is not clearly documented. If a user requested both static IPv4 address and IPv6 SLAAC address configured before an interface being entered to the 'configured' state, then '--ipv6' for wait-online can be used. So, the behavior change should not cause severe regression. Closes #27779.
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