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Enable TCP Path MTU Discovery when an ICMP black hole is detected #9537

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merged 2 commits into from
Oct 28, 2020
Merged

Enable TCP Path MTU Discovery when an ICMP black hole is detected #9537

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8f0fc9d
Set net.ipv4.tcp_mtu_probing = 1
tstromberg Oct 23, 2020
71af47a
Add mtu probing to ISO
tstromberg Oct 23, 2020
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3 changes: 3 additions & 0 deletions ...so/minikube-iso/board/coreos/minikube/rootfs-overlay/etc/sysctl.d/11-tcp-mtu-probing.conf
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@@ -0,0 +1,3 @@
# Turn on MTU probing to avoid network hangs when the Docker MTU is larger than
# the host or upstream network MTU.
net.ipv4.tcp_mtu_probing=1
3 changes: 3 additions & 0 deletions deploy/kicbase/11-tcp-mtu-probing.conf
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@@ -0,0 +1,3 @@
# Turn on MTU probing to avoid network hangs when the Docker MTU is larger than
# the host or upstream network MTU.
net.ipv4.tcp_mtu_probing=1
1 change: 1 addition & 0 deletions deploy/kicbase/Dockerfile
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Expand Up @@ -23,6 +23,7 @@ FROM ubuntu:focal-20200423

# copy in static files (configs, scripts)
COPY 10-network-security.conf /etc/sysctl.d/10-network-security.conf
COPY 11-tcp-mtu-probing.conf /etc/sysctl.d/11-tcp-mtu-probing.conf
COPY clean-install /usr/local/bin/clean-install
COPY entrypoint /usr/local/bin/entrypoint

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