net.ipv4.conf.default.rp_filter has 2 different values in default RHEL9 install

Issue

• In a default installation of RHEL9, net.ipv4.conf.default.rp_filter is defined twice, (/usr/lib/sysctl.d/50-redhat.conf and 50-default.conf), with 50-default.conf setting it to 2 and 50-redhat.conf setting it to 1.

  # grep net.ipv4.conf.default.rp_filter /usr/lib/sysctl.d/*
  /usr/lib/sysctl.d/50-default.conf:net.ipv4.conf.default.rp_filter = 2
  /usr/lib/sysctl.d/50-redhat.conf:net.ipv4.conf.default.rp_filter = 1
  

• And even with the value set to 1, the oscap scan oof CIS profile fails:

  oscap xccdf eval --profile xccdf_org.ssgproject.content_profile_cis --rule xccdf_org.ssgproject.content_rule_sysctl_net_ipv4_conf_default_rp_filter  --results `uname -n`_scan_results.xml --report `uname -n`_scan_report.html /usr/share/xml/scap/ssg/content/ssg-rhel9-ds.xml
  --- Starting Evaluation ---
  
  Title   Enable Kernel Parameter to Use Reverse Path Filtering on all IPv4 Interfaces by Default
  Rule    xccdf_org.ssgproject.content_rule_sysctl_net_ipv4_conf_default_rp_filter
  Ident   CCE-84009-0
  Result  fail
  

  and

  sysctl -a |grep net.ipv4.conf.default.rp_filter
  net.ipv4.conf.default.rp_filter = 1