Bug #7719
closed
Dynamic DNS updates not working on interface failover
100%
Description
I realized that dynamic DNS hostnames are not being updated on interface failover. When manually marking a gateway as "down" everything works fine, but not when the interface actually goes down on its own. I think I tracked down the root cause:
When an interface in a gateway group fails, and this gateway group is tied to a dynamic DNS configuration, rc.dyndns.update is called with the user defined interface name as a parameter.
Within that script, lookup_gateway_interface_by_name() converts the user defined name to the friendly interface name (eg "wan") and this is passed to services_dyndns_configure()
The problem is that services_dyndns_configure() looks designed to accept not the friendly interface name ("friendlyiface") but the real interface name ("interface"), since it ends up comparing to the 'interface' item of return_gateway_groups_array()
In my case, for example, executing:
services_dyndns_configure(wan)
on the PHP console does not do anything, while
services_dyndns_configure(bge_vlan1)
triggers the proper dynamic DNS update.
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On the other hand, when you manually mark a gateway as down, the script is set to refresh all configs and that's why it works fine:
Jul 24 17:46:34 check_reload_status Updating all dyndns
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I know this has previously worked at some point, so I don't know if this is a regression, or when it occured.
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