[FS#1274] odhcpd logspam every ~10 minutes: "Using a RA lifetime of 0 seconds"

[LEDE Bugs]

The following task has a new comment added:

FS#1274 - odhcpd logspam every ~10 minutes: "Using a RA lifetime of 0 seconds"
User who did this - Hans Dedecker (dedeckeh)

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Since you don't have a public IPv6 prefix the router lifetime in the unsolicited RA messages will be 0.
By default odhcpd uses the default minimum and maximum router advertisement interval described in RFC4861 :

MaxRtrAdvInterval
                     The maximum time allowed between sending
                     unsolicited multicast Router Advertisements from
                     the interface, in seconds.  MUST be no less than 4
                     seconds and no greater than 1800 seconds.

                     Default: 600 seconds

MinRtrAdvInterval
                     The minimum time allowed between sending
                     unsolicited multicast Router Advertisements from
                     the interface, in seconds.  MUST be no less than 3
                     seconds and no greater than .75 *
                     MaxRtrAdvInterval.

                     Default: 0.33 * MaxRtrAdvInterval If
                     MaxRtrAdvInterval >= 9 seconds; otherwise, the
                     Default is MaxRtrAdvInterval.

As such the frequency and contents of the trace is completely normal; the trace is there for trouble shooting purposes (which is often required if people complain about IPv6 connectivity issues) but if you want to suppress the trace you can set the loglevel uci parameter to 0 in the dhcp odhcpd uci section.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1274#comment4114