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feat(docker-new): enable lo multicast and DDS sysctl tuning at startup #7021

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Merged
xmfcx merged 1 commit into from
Apr 15, 2026
+9 −0
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feat(docker-new): enable lo multicast and DDS sysctl tuning at startup #7021

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9 changes: 9 additions & 0 deletions docker-new/docker-entrypoint.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,15 @@ if [ -n "${HOST_UID}" ] && [ -n "${HOST_GID}" ]; then
groupmod -g "${HOST_GID}" "${USERNAME}" >/dev/null 2>&1 || true
fi

# Enable multicast on loopback so DDS discovery works when pinned to lo
ip link set lo multicast on >/dev/null 2>&1 || true

# Apply system-wide network tuning for DDS (needs --privileged or --cap-add=NET_ADMIN)
# https://autowarefoundation.github.io/autoware-documentation/main/installation/additional-settings-for-developers/network-configuration/dds-settings/#tune-system-wide-network-settings
sysctl -w net.core.rmem_max=2147483647 >/dev/null 2>&1 || true
sysctl -w net.ipv4.ipfrag_time=3 >/dev/null 2>&1 || true
sysctl -w net.ipv4.ipfrag_high_thresh=134217728 >/dev/null 2>&1 || true

# shellcheck source=/dev/null
source "/opt/ros/${ROS_DISTRO}/setup.bash"

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