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Merge pull request #38 from SUNET/jocar-force-accept-ra-in-debian

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Don't throw away v6 route when IP forwarding
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Micke Nordin 2023-03-15 14:03:22 +01:00 committed by GitHub
parent abe0d28854 0f1c5ec93f
commit dd3b498c7e
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1 changed files with 23 additions and 0 deletions
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23
iaas-setup.sh
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@ -75,6 +75,29 @@ if grep -q '^# en_US.UTF-8 UTF-8$' $locale_gen_file; then
locale-gen
fi
if [ "$(lsb_release -is)" == "Debian" ]; then
interfaces_file='/etc/network/interfaces.d/50-cloud-init'
if [ -f "${interfaces_file}" ]; then
interface_string='iface ens3 inet6 dhcp'
accept_ra_string=' accept_ra 2'
if ! grep -qPz "${interface_string}\n${accept_ra_string}" ${interfaces_file} ; then
# By default net.ipv6.conf.ens3.accept_ra is set to 1 which
# makes the kernel throw a way the IPv6 route when
# net.ipv6.conf.all.forwarding is set to 1 by our service for
# Docker.
echo "Configuring interfaces to always accept Router Advertisements even with IP Forwarding enabled"
sed -i -r "s/(${interface_string})/\1\n${accept_ra_string}/" ${interfaces_file}
else
echo "WARN: Configuration already applied or no match for \"${interface_string}\" in ${interfaces_file}"
fi
else
echo "WARN: ${interfaces_file} not found. File renamed in this image?"
fi
fi
DEBIAN_FRONTEND="noninteractive" apt-get -y update
DEBIAN_FRONTEND="noninteractive" apt-get -o Dpkg::Options::="--force-confnew" --fix-broken --assume-yes dist-upgrade
reboot