diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c index 2913bf946d..fa6ac4b8f7 100644 --- a/src/network/networkd-link.c +++ b/src/network/networkd-link.c @@ -2506,6 +2506,48 @@ static bool link_address_is_dynamic(Link *link, Address *address) { return false; } +static int link_enumerate_ipv6_tentative_addresses(Link *link) { + _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; + sd_netlink_message *addr; + int r; + + assert(link); + assert(link->manager); + assert(link->manager->rtnl); + + r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_GETADDR, 0, AF_INET6); + if (r < 0) + return r; + + r = sd_netlink_call(link->manager->rtnl, req, 0, &reply); + if (r < 0) + return r; + + for (addr = reply; addr; addr = sd_netlink_message_next(addr)) { + unsigned char flags; + int ifindex; + + r = sd_rtnl_message_addr_get_ifindex(addr, &ifindex); + if (r < 0) { + log_link_warning_errno(link, r, "rtnl: invalid ifindex, ignoring: %m"); + continue; + } else if (link->ifindex != ifindex) + continue; + + r = sd_rtnl_message_addr_get_flags(addr, &flags); + if (r < 0) { + log_link_warning_errno(link, r, "rtnl: received address message with invalid flags, ignoring: %m"); + continue; + } else if (!(flags & IFA_F_TENTATIVE)) + continue; + + log_link_debug(link, "Found tentative ipv6 link-local address"); + (void) manager_rtnl_process_address(link->manager->rtnl, addr, link->manager); + } + + return 0; +} + static int link_drop_foreign_config(Link *link) { Address *address; Neighbor *neighbor; @@ -2513,6 +2555,14 @@ static int link_drop_foreign_config(Link *link) { Iterator i; int r; + /* The kernel doesn't notify us about tentative addresses; + * so if ipv6ll is disabled, we need to enumerate them now so we can drop them below */ + if (!link_ipv6ll_enabled(link)) { + r = link_enumerate_ipv6_tentative_addresses(link); + if (r < 0) + return r; + } + SET_FOREACH(address, link->addresses_foreign, i) { /* we consider IPv6LL addresses to be managed by the kernel */ if (address->family == AF_INET6 && in_addr_is_link_local(AF_INET6, &address->in_addr) == 1 && link_ipv6ll_enabled(link))