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check-config.sh: report IP forwarding sysctl state

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Signed-off-by: Rob Murray <rob.murray@docker.com>
This commit is contained in:
Rob Murray
2025-08-06 16:43:36 +01:00
parent f71e86eed5
commit 2fff6b442e
1 changed files with 14 additions and 0 deletions
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14
contrib/check-config.sh
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@@ -128,6 +128,16 @@ check_device() {
fi
}
check_sysctl() {
val=$(sysctl -n $1)
want=$2
if [ "$val" = "$want" ]; then
wrap_good "sysctl $1" "enabled"
else
wrap_bad "sysctl $1" "disabled"
fi
}
if [ ! -e "$CONFIG" ]; then
wrap_warning "warning: $CONFIG does not exist, searching other paths for kernel config ..."
for tryConfig in $possibleConfigs; do
@@ -343,6 +353,10 @@ if ! is_set EXT4_FS || ! is_set EXT4_FS_POSIX_ACL || ! is_set EXT4_FS_SECURITY;
fi
echo '- Network Drivers:'
echo " - \"$(wrap_color 'bridge' blue)\":"
check_sysctl net.ipv4.ip_forward 1 | sed 's/^/ - /'
check_sysctl net.ipv6.conf.all.forwarding 1 | sed 's/^/ - /'
check_sysctl net.ipv6.conf.default.forwarding 1 | sed 's/^/ - /'
echo " - \"$(wrap_color 'overlay' blue)\":"
check_flags VXLAN BRIDGE_VLAN_FILTERING | sed 's/^/ /'
echo ' Optional (for encrypted networks):'