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-rw-r--r--nonsystemd/openrc/sysctl.conf7
1 files changed, 7 insertions, 0 deletions
diff --git a/nonsystemd/openrc/sysctl.conf b/nonsystemd/openrc/sysctl.conf
index de238b937..e9df5c95a 100644
--- a/nonsystemd/openrc/sysctl.conf
+++ b/nonsystemd/openrc/sysctl.conf
@@ -19,6 +19,13 @@ net.ipv4.conf.all.accept_source_route = 0
# Promote secondary addresses when the primary address is removed
net.ipv4.conf.all.promote_secondaries = 1
+# 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