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- # This file is part of systemd.
- #
- # systemd is free software; you can redistribute it and/or modify it
- # under the terms of the GNU Lesser General Public License as published by
- # the Free Software Foundation; either version 2.1 of the License, or
- # (at your option) any later version.
- # See sysctl.d(5) and core(5) for documentation.
- # To override settings in this file, create a local file in /etc
- # (e.g. /etc/sysctl.d/90-override.conf), and put any assignments
- # there.
- # Promote secondary addresses when the primary address is removed
- net.ipv4.conf.default.promote_secondaries = 1
- net.ipv4.conf.*.promote_secondaries = 1
- -net.ipv4.conf.all.promote_secondaries
- # ping(8) without CAP_NET_ADMIN and CAP_NET_RAW
- # The upper limit is set to 2^31-1. Values greater than that get rejected by
- # the kernel because of this definition in linux/include/net/ping.h:
- # #define GID_T_MAX (((gid_t)~0U) >> 1)
- # That's not so bad because values between 2^31 and 2^32-1 are reserved on
- # systemd-based systems anyway: https://systemd.io/UIDS-GIDS.html#summary
- -net.ipv4.ping_group_range = 0 2147483647
- # Fair Queue CoDel packet scheduler to fight bufferbloat
- net.core.default_qdisc = fq_codel
- # Enable regular file and FIFO protection
- fs.protected_regular = 1
- fs.protected_fifos = 1
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