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network: change UseGateway= default to UseRoutes= setting 

Anyone previously using the UseRoutes=false parameter expected their
dhcp4-provided gateway route to be ignored, as well.  However, with
the introduction of the UseGateway= parameter, this is no longer true.

In order to keep backwards compatibility, this sets the UseGateway=
default value to whatever UseRoutes= has been set to.
This commit is contained in:
Dan Streetman 2020-04-15 14:40:21 -04:00
parent f74067dfbd
commit 589397a277
4 changed files with 9 additions and 5 deletions
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5
man/systemd.network.xml
View File

@ -1491,8 +1491,9 @@
<varlistentry>
<term><varname>UseGateway=</varname></term>
<listitem>
<para>When true (the default), the gateway will be requested from the DHCP server and added to the
routing table with a metric of 1024, and a scope of "link".</para>
<para>When true, the gateway will be requested from the DHCP server and added to the routing table with a
metric of 1024, and a scope of "link". When unset, the value specified with <option>UseRoutes=</option>
is used.</para>
</listitem>
</varlistentry>
<varlistentry>

2
src/network/networkd-network-gperf.gperf
View File

@ -164,7 +164,7 @@ DHCPv4.UseMTU, config_parse_bool,
DHCPv4.UseHostname, config_parse_bool, 0, offsetof(Network, dhcp_use_hostname)
DHCPv4.UseDomains, config_parse_dhcp_use_domains, 0, offsetof(Network, dhcp_use_domains)
DHCPv4.UseRoutes, config_parse_bool, 0, offsetof(Network, dhcp_use_routes)
DHCPv4.UseGateway, config_parse_bool, 0, offsetof(Network, dhcp_use_gateway)
DHCPv4.UseGateway, config_parse_tristate, 0, offsetof(Network, dhcp_use_gateway)
DHCPv4.RequestOptions, config_parse_dhcp_request_options, 0, 0
DHCPv4.Anonymize, config_parse_bool, 0, offsetof(Network, dhcp_anonymize)
DHCPv4.SendHostname, config_parse_bool, 0, offsetof(Network, dhcp_send_hostname)

5
src/network/networkd-network.c
View File

@ -267,6 +267,9 @@ int network_verify(Network *network) {
network->dhcp_use_mtu = false;
}
if (network->dhcp_use_gateway < 0)
network->dhcp_use_gateway = network->dhcp_use_routes;
if (network->dhcp_critical >= 0) {
if (network->keep_configuration >= 0)
log_warning("%s: Both KeepConfiguration= and deprecated CriticalConnection= are set. "
@ -385,7 +388,7 @@ int network_load_one(Manager *manager, OrderedHashmap **networks, const char *fi
.dhcp_use_dns = true,
.dhcp_use_hostname = true,
.dhcp_use_routes = true,
.dhcp_use_gateway = true,
.dhcp_use_gateway = -1,
/* NOTE: this var might be overwritten by network_apply_anonymize_if_set */
.dhcp_send_hostname = true,
.dhcp_send_release = true,

2
src/network/networkd-network.h
View File

@ -110,7 +110,7 @@ struct Network {
bool dhcp_use_sip;
bool dhcp_use_mtu;
bool dhcp_use_routes;
bool dhcp_use_gateway;
int dhcp_use_gateway;
bool dhcp_use_timezone;
bool rapid_commit;
bool dhcp_use_hostname;