"sysctl net.ipv6.conf.all.accept_ra"はCentOS 7とRHEL 7で異なる動作をします。

2つの仮想マシンがあります。 1つはRHEL 7を使用し、もう1つはCentOS 7を使用します。sysctl net.ipv6.conf.all.accept_ra2 つの VMS で実行すると、別の動作が表示されます。

オペレーティングシステム7

$ sysctl net.ipv6.conf.all.accept_ra
net.ipv6.conf.all.accept_ra = 1

RHEL7

# sysctl net.ipv6.conf.all.accept_ra 
sysctl: cannot stat /proc/sys/net/ipv6/conf/all/accept_ra: No such file or directory

ただし、このパラメータはファイルにnet.ipv6.conf.all.accept_ra存在します。/etc/sysctl.conf

# sysctl settings are defined through files in
# /usr/lib/sysctl.d/, /run/sysctl.d/, and /etc/sysctl.d/.
#
# Vendors settings live in /usr/lib/sysctl.d/.
# To override a whole file, create a new file with the same in
# /etc/sysctl.d/ and put new settings there. To override
# only specific settings, add a file with a lexically later
# name in /etc/sysctl.d/ and put new settings there.
#
# For more information, see sysctl.conf(5) and sysctl.d(5).
fs.suid_dumpable = 0 
kernel.randomize_va_space = 2
net.ipv4.ip_forward = 0
net.ipv4.conf.all.send_redirects = 0 
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.all.secure_redirects = 0
net.ipv4.conf.default.secure_redirects = 0
net.ipv4.conf.all.log_martians = 1
net.ipv4.conf.default.log_martians = 1
pv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_ignore_bogus_error_responses = 1
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.tcp_syncookies = 1
net.ipv6.conf.all.accept_ra = 0
net.ipv6.conf.default.accept_ra = 0
net.ipv6.conf.all.accept_redirects = 0
net.ipv6.conf.default.accept_redirects = 0
net.core.somaxconn=511
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv6.conf.all.accept_ra = 0
net.ipv6.conf.default.accept_ra = 0

RHEL 7でエラーの原因は何ですか？

修正する

ipv6後で私はそこにディレクトリがないことを発見しました/proc/sys/net/。なぜですか？