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663996b3 MS |
1 | # This file is part of systemd. |
2 | # | |
3 | # systemd is free software; you can redistribute it and/or modify it | |
4 | # under the terms of the GNU Lesser General Public License as published by | |
5 | # the Free Software Foundation; either version 2.1 of the License, or | |
6 | # (at your option) any later version. | |
7 | ||
5a920b42 | 8 | # See sysctl.d(5) and core(5) for documentation. |
e3bff60a MP |
9 | |
10 | # To override settings in this file, create a local file in /etc | |
11 | # (e.g. /etc/sysctl.d/90-override.conf), and put any assignments | |
12 | # there. | |
663996b3 MS |
13 | |
14 | # System Request functionality of the kernel (SYNC) | |
e3bff60a MP |
15 | # |
16 | # Use kernel.sysrq = 1 to allow all keys. | |
2897b343 MP |
17 | # See https://www.kernel.org/doc/html/latest/admin-guide/sysrq.html for a list |
18 | # of values and keys. | |
663996b3 MS |
19 | kernel.sysrq = 16 |
20 | ||
21 | # Append the PID to the core filename | |
22 | kernel.core_uses_pid = 1 | |
23 | ||
24 | # Source route verification | |
6e866b33 | 25 | net.ipv4.conf.all.rp_filter = 2 |
663996b3 MS |
26 | |
27 | # Do not accept source routing | |
5eef597e MP |
28 | net.ipv4.conf.all.accept_source_route = 0 |
29 | ||
30 | # Promote secondary addresses when the primary address is removed | |
5eef597e MP |
31 | net.ipv4.conf.all.promote_secondaries = 1 |
32 | ||
33 | # Fair Queue CoDel packet scheduler to fight bufferbloat | |
34 | net.core.default_qdisc = fq_codel | |
663996b3 MS |
35 | |
36 | # Enable hard and soft link protection | |
37 | fs.protected_hardlinks = 1 | |
38 | fs.protected_symlinks = 1 |