networkd: link - track state of IPv6LL address

This is managed by the kernel, but we should track whether or not we have
a configured IPv6LL address. This fixes two issues:
 - we now wait for IPv6LL before considering the link ready
 - we now wait for IPv6LL before attempting to do NDisc or DHCPv6
   these protocols relies on an LL address being available.

1 files changed, 5 insertions, 2 deletions

diff --git a/src/network/networkd-link.h b/src/network/networkd-link.h
index 440e33227a..b564bcbca0 100644
--- a/src/network/networkd-link.h
+++ b/src/network/networkd-link.h
@@ -99,8 +99,9 @@ struct Link {
         bool ndisc_configured;
 
         sd_ipv4ll *ipv4ll;
-        bool ipv4ll_address;
-        bool ipv4ll_route;
+        bool ipv4ll_address:1;
+        bool ipv4ll_route:1;
+        bool ipv6ll_address:1;
 
         bool static_configured;
 
@@ -143,6 +144,8 @@ int link_save(Link *link);
 int link_carrier_reset(Link *link);
 bool link_has_carrier(Link *link);
 
+int link_ipv6ll_gained(Link *link);
+
 int link_set_mtu(Link *link, uint32_t mtu);
 int link_set_hostname(Link *link, const char *hostname);
 int link_set_timezone(Link *link, const char *timezone);