From 54faef034bb2062ed8afa72e2c1be40ef7cc41c5 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Fri, 26 Jul 2019 09:25:09 +0200 Subject: [PATCH] Revert "Revert "sysctl: Enable ping(8) inside rootless Podman containers"" This reverts commit be74f51605b4c7cb74fec3a50cd13b67598a8ac1. Let's add this again. With the new sysctl "-" thing we can make this work. Resolves: #2037807 (cherry picked from commit 0338934f4bcda6a96a5342449ae96b003de3378d) --- sysctl.d/50-default.conf | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/sysctl.d/50-default.conf b/sysctl.d/50-default.conf index e0afc9c702..21ae1df13d 100644 --- a/sysctl.d/50-default.conf +++ b/sysctl.d/50-default.conf @@ -33,6 +33,14 @@ 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