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update examples/var_service/README

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Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
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Denys Vlasenko 2010-12-06 15:42:44 +01:00
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examples/var_service/README
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@ -18,6 +18,8 @@ udhcpc on other interfaces (var_service/dhcp_if/run script uses _foo suffix
or the parent directory as interface name). When IP address is obtained or lost,
var_service/dhcp_if/dhcp_handler is run. It saves new config data to
/var/run/service/fw/dhcp_if.ipconf and (re)starts /var/service/fw service.
This example can be used as a template for other dynamic network link services
(ppp/vpn/zcip).
var_service/ifplugd_if -
watches link status of interface if. Downs and ups /var/service/dhcp_if
@ -35,6 +37,9 @@ An *one-shot* service which reconfigures network based on current known state
of ALL interfaces. Uses conf/*.ipconf (static config) and /var/run/service/fw/*.ipconf
(dynamic config from dhcp/ppp/vpn/etc) to determine what to do.
One-shot-ness of this service means that it shuts itself off after single run.
IOW: it is not a constantly running daemon sort of thing.
It starts, it configures the network, it shuts down, all done
(unlike infamous NetworkManagers which sit in RAM forever, doing hell knows what).
However, any dhcp/ppp/vpn or similar service can restart it anytime
when it senses the change in network configuration.