40 lines
1.4 KiB
Bash
Executable File
40 lines
1.4 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2016, Rackspace US, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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#
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# dib-lint: disable=set setu setpipefail indent
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if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
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set -x
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fi
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set -e
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# This will disable the privacy extensions for IPv6 (RFC4941)
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# (RFC4941 obsoletes RFC3041)
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#
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# Note that depending on the implementation of how the sysctl
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# settings are applied there is a race condition: there might be
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# a small time-frame where the original Ubuntu settings from
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# /etc/sysctl.d/10-ipv6-privacy.conf are already applied but the
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# new settings from /etc/sysctl.d/99-cloudimg-ipv6.conf
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# not yet.
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# If during this time all started network interfaces will
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# use the privacy extension.
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cat > /etc/sysctl.d/99-cloudimg-ipv6.conf <<EOF
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# See https://bugs.launchpad.net/ubuntu/+source/procps/+bug/1068756
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net.ipv6.conf.all.use_tempaddr=0
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net.ipv6.conf.default.use_tempaddr=0
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EOF
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