mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager
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80 lines
3.2 KiB
Plaintext
80 lines
3.2 KiB
Plaintext
# Example configuration snippet for NetworkManager to
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# overwrite some default value for more privacy.
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# Drop this file for example to /etc/NetworkManager/conf.d/30-anon.conf
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#
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# See man NetworkManager.conf(5) for how default values
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# work. See man nm-settings(5) for the connection properties.
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#
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#
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# This enables some privacy setting by default. The defaults
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# apply only to settings that do not explicitly configure
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# a per-connection override.
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# That means, if the connection profile has
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#
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# $ nmcli -f 'connection.stable-id,802-11-wireless.cloned-mac-address,802-11-wireless.mac-address-randomization,802-3-ethernet.cloned-mac-address,ipv4.dhcp-client-id,ipv6.addr-gen-mode,ipv6.dhcp-duid,ipv6.ip6-privacy' connection show "$CON_NAME"
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# connection.stable-id: --
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# 802-11-wireless.cloned-mac-address: --
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# 802-11-wireless.mac-address-randomization: default
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# 802-3-ethernet.cloned-mac-address: --
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# ipv4.dhcp-client-id: --
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# ipv6.addr-gen-mode: stable-privacy
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# ipv6.dhcp-duid: --
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# ipv6.ip6-privacy: -1 (unknown)
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#
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# then the default values are inherited and thus both the MAC
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# address, IPv6 host identifier, and DHCP identifiers are randomized.
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# Also, ipv6 private addresses (RFC4941) are used in
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# addition.
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#
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#
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# The connection's stable-id is really a token associated with the identity
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# of the connection. It means, by setting it to different values, different
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# addresses and DHCP options are generated.
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# For some profiles it can make sense to reuse the same stable-id
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# (and thus share MAC address and IPv6 host identifier) for the duration
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# of the current boot, but still exclusive to the connection profile.
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# Thus, explicitly set the stable-id like:
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#
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# $ nmcli connection modify "$CON_NAME" connection.stable-id '${CONNECTION}/${BOOT}'
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#
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# ... or keep it stable across reboots, but still distinct per profile:
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#
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# $ nmcli connection modify "$CON_NAME" connection.stable-id '${CONNECTION}'
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#
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# ... or use the same stable IDs for a bunch of profiles
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#
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# $ nmcli connection modify "$CON_NAME" connection.stable-id 'my-home-wifi yada yada'
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#
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# ... or use the same IDs for a bunch of profiles, but only for the current boot
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#
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# $ nmcli connection modify "$CON_NAME" connection.stable-id 'my-home-wifi yada yada/${BOOT}'
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[device-30-anon]
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wifi.scan-rand-mac-address=yes
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[connection-30-anon]
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connection.stable-id=${RANDOM}
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ethernet.cloned-mac-address=stable
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wifi.cloned-mac-address=stable
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ipv6.ip6-privacy=2
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# RFC 7844 "DHCP Anonymity Profiles" mandates in combination with
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# MAC address randomization:
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# connection.stable-id=${RANDOM}
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# ethernet.cloned-mac-address=stable
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# wifi.cloned-mac-address=stable
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# ipv4.dhcp-client-id=mac
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# ipv6.dhcp-duid=ll
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# In case, the interface cannot use MAC address randomization,
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# RFC 7844 recommends
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# connection.stable-id=${RANDOM}
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# ipv4.dhcp-client-id=stable
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# ipv6.dhcp-duid=stable-llt
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# See https://tools.ietf.org/html/rfc7844#section-3.5
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# https://tools.ietf.org/html/rfc7844#section-4.3
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#
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# In this example however, the defaults are set to a stable identifier
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# depending on the connection.stable-id.
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ipv4.dhcp-client-id=stable
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ipv6.dhcp-duid=stable-uuid
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