Audit Logging - remote IP address - IdP v3.4

Lipscomb, Gary glipscomb at
Mon May 27 21:45:26 EDT 2019

Hi list,

We have noticed a change in the format of the  Remote IP address we capture in the idp-audit.log which we import into Splunk for analysis. The word "true" is appended to the remote IP address.
Is this an expected change from the MDC [5] or should I be looking elsewhere?

RHEL 7.6 Maipo
IdP v3.4.4
Tomcat 7

[1] logback.xml
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <Pattern>%date{ISO8601} - %mdc{idp.remote_addr} - %level [%logger:%line] - %msg%n%ex{short}</Pattern>

[2] 2018 idp-audit.log IdP v3.3.3 and IdP v 3.4.0

[3] 2019 idp-audit.log    IdPv3.4.4

[4] remote IP address in header obtained using tcpdump
2720:   X-Forward:
2721:   X-Forwarded-Proto: https


Gary Lipscomb
Technical Officer (Infrastructure), Systems | Infrastructure & Client Services | Division of Information Technology
Charles Sturt University


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