The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.
#!/bin/bash
# Reconstructed from oval:mil.disa.stig.ol9os:def:271881
# OL 9 must not accept router advertisements on all IPv6 interfaces by default.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.
# net.ipv6.conf.default.accept_ra setting in kernel is 0
# sysctl_object (sysctl_test)
test_1() {
[ "$(cat /proc/sys/net/ipv6/conf/default/accept_ra)" -eq 0 ]
}
if test_1; then
echo "PASS"
else
echo "FAIL"
fi Assessment Script Powered by AISandbox-executed
A standalone Shell script to assess this control automatically. Review before running it in your environment.
Syntax-checked and actually executed in an isolated sandbox (not the real system this checks) — confirmed to run without errors.
#!/bin/sh
# OVAL definition: oval:mil.disa.stig.ol9os:def:271881
if ! command -v sysctl >/dev/null; then echo "FAIL"; exit 1; fi
if [ ! -f /etc/sysctl.d/99-sysdefaults.conf ]; then echo "PASS"; exit 0; fi
if grep -q "^net.ipv6.conf.default.accept_ra = 0$" /etc/sysctl.d/99-sysdefaults.conf; then echo "PASS"; exit 0; fi
echo "FAIL"; exit 1