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Merge pull request #17619 from yuwata/network-ndisc-dhcp6-client-always
network: honor M or O flag in RA even if IPv6AcceptRA.DHCPv6Cleint=always
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commit
e5b88e8d73
@ -2086,9 +2086,11 @@ IPv6Token=prefixstable:2002:da8:1::</programlisting></para>
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<varlistentry>
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<term><varname>DHCPv6Client=</varname></term>
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<listitem>
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<para>Takes a boolean, or the special value <literal>always</literal>. When true (the default), the DHCPv6 client will be started when the
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RA has the managed or other information flag. If set to <literal>always</literal>, the DHCPv6 client will be started even if there is no
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managed or other information flag in the RA.</para>
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<para>Takes a boolean, or the special value <literal>always</literal>. When true or
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<literal>always</literal>, the DHCPv6 client will be started when the RA has the managed or
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other information flag. If set to <literal>always</literal>, the DHCPv6 client will also be
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started in managed mode when neither managed nor other information flag is set in the RA.
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Defaults to true.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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@ -1743,8 +1743,7 @@ int sd_dhcp6_client_start(sd_dhcp6_client *client) {
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}
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log_dhcp6_client(client, "Started in %s mode",
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client->information_request? "Information request":
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"Managed");
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client->information_request ? "Information request" : "Managed");
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return client_start(client, state);
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}
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@ -1163,13 +1163,17 @@ static int ndisc_router_handler(Link *link, sd_ndisc_router *rt) {
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if (r < 0)
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return log_link_error_errno(link, r, "Failed to get RA flags: %m");
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if ((flags & (ND_RA_FLAG_MANAGED | ND_RA_FLAG_OTHER) && link->network->ipv6_accept_ra_start_dhcp6_client)) {
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if ((flags & (ND_RA_FLAG_MANAGED | ND_RA_FLAG_OTHER) &&
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link->network->ipv6_accept_ra_start_dhcp6_client != IPV6_ACCEPT_RA_START_DHCP6_CLIENT_NO) ||
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link->network->ipv6_accept_ra_start_dhcp6_client == IPV6_ACCEPT_RA_START_DHCP6_CLIENT_ALWAYS) {
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if (link->network->ipv6_accept_ra_start_dhcp6_client == IPV6_ACCEPT_RA_START_DHCP6_CLIENT_ALWAYS)
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r = dhcp6_request_address(link, false);
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else
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if (flags & (ND_RA_FLAG_MANAGED | ND_RA_FLAG_OTHER))
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/* (re)start DHCPv6 client in stateful or stateless mode according to RA flags */
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r = dhcp6_request_address(link, !(flags & ND_RA_FLAG_MANAGED));
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else
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/* When IPv6AcceptRA.DHCPv6Client=always, start dhcp6 client in managed mode
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* even if router does not have M or O flag. */
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r = dhcp6_request_address(link, false);
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if (r < 0 && r != -EBUSY)
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return log_link_error_errno(link, r, "Could not acquire DHCPv6 lease on NDisc request: %m");
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else
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