Hopefully fix IPv6 fwding perf by disabling GSO
Apparently GSO (Generic Segmentation Offload) doesn't work quite right when forwarding IPv6 in a virtual environment. It provides negligible improvements to performance anyway, so let's just disable it outright.
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@ -36,6 +36,19 @@ EOF
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fi
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echo "[*] Configure GRUB"
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cat << EOF > /etc/default/grub
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# If you change this file, run 'update-grub' afterwards to update
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# /boot/grub/grub.cfg.
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GRUB_DEFAULT=0
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GRUB_TIMEOUT=0
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GRUB_DISTRIBUTOR=Debian
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GRUB_CMDLINE_LINUX_DEFAULT="quiet"
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# Disable GSO (Generic Segmentation Offload) in order to improve IPv6 forwarding performance
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GRUB_CMDLINE_LINUX="debian-installer=en_US virtio_net.gso=0"
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EOF
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/usr/sbin/update-grub
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echo "[*] APT Update"
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apt-get update || exit 1
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