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networkd: add ability to use BOOTP

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Add the following network option to enable BOOTP:

[DHCPv4]
Bootp=yes

This will allow a two message request / reply sequence that doesn't
require DHCP message types.
This commit is contained in:
Colin Foster 2024-10-22 13:26:36 -05:00
parent 9120ae7099
commit 8a173aa996
4 changed files with 17 additions and 0 deletions
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11
man/systemd.network.xml
View File

@ -2525,6 +2525,17 @@ NFTSet=prefix:netdev:filter:eth_ipv4_prefix</programlisting>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>BOOTP=</varname></term>
<listitem>
<para>Takes a boolean. The DHCPv4 client can be configured to communicate with BOOP servers that
don't accept Option 53, DHCP Message Type. In this configuration, a BOOTP Request is sent without
any options by default. A BOOTP reply that contains Option 1: Subnet Mask is expected.</para>
<xi:include href="version-info.xml" xpointer="v257"/>
</listitem>
</varlistentry>
<!-- How to use the DHCP lease -->
<varlistentry>

4
src/network/networkd-dhcp4.c
View File

@ -1489,6 +1489,10 @@ static int dhcp4_configure(Link *link) {
if (r < 0)
return log_link_debug_errno(link, r, "DHCPv4 CLIENT: Failed to allocate DHCPv4 client: %m");
r = sd_dhcp_client_set_bootp(link->dhcp_client, link->network->dhcp_send_bootp);
if (r < 0)
return log_link_debug_errno(link, r, "DHCPv4 CLIENT: Failed to set BOOTP flag: %m");
r = sd_dhcp_client_attach_event(link->dhcp_client, link->manager->event, 0);
if (r < 0)
return log_link_debug_errno(link, r, "DHCPv4 CLIENT: Failed to attach event to DHCPv4 client: %m");

1
src/network/networkd-network-gperf.gperf
View File

@ -243,6 +243,7 @@ DHCPv4.QuickAck, config_parse_bool,
DHCPv4.RequestOptions, config_parse_dhcp_request_options, AF_INET, 0
DHCPv4.Anonymize, config_parse_bool, 0, offsetof(Network, dhcp_anonymize)
DHCPv4.SendHostname, config_parse_dhcp_send_hostname, AF_INET, 0
DHCPv4.BOOTP, config_parse_bool, 0, offsetof(Network, dhcp_send_bootp)
DHCPv4.Hostname, config_parse_hostname, 0, offsetof(Network, dhcp_hostname)
DHCPv4.Label, config_parse_dhcp_label, 0, offsetof(Network, dhcp_label)
DHCPv4.RequestBroadcast, config_parse_tristate, 0, offsetof(Network, dhcp_broadcast)

1
src/network/networkd-network.h
View File

@ -179,6 +179,7 @@ struct Network {
OrderedHashmap *dhcp_client_send_vendor_options;
char *dhcp_netlabel;
NFTSetContext dhcp_nft_set_context;
bool dhcp_send_bootp;
/* DHCPv6 Client support */
bool dhcp6_use_address;