diff options
Diffstat (limited to 'nixos/modules/tasks/network-interfaces.nix')
| -rw-r--r-- | nixos/modules/tasks/network-interfaces.nix | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/nixos/modules/tasks/network-interfaces.nix b/nixos/modules/tasks/network-interfaces.nix index f4851988d63d..f80c5045c07d 100644 --- a/nixos/modules/tasks/network-interfaces.nix +++ b/nixos/modules/tasks/network-interfaces.nix @@ -155,6 +155,16 @@ let description = "Name of the interface."; }; + preferTempAddress = mkOption { + type = types.bool; + default = cfg.enableIPv6; + defaultText = literalExample "config.networking.enableIpv6"; + description = '' + When using SLAAC prefer a temporary (IPv6) address over the EUI-64 + address for originating connections. This is used to reduce tracking. + ''; + }; + useDHCP = mkOption { type = types.nullOr types.bool; default = null; @@ -941,6 +951,11 @@ in message = '' The networking.interfaces."${i.name}" must not have any defined ips when it is a slave. ''; + })) ++ (flip map interfaces (i: { + assertion = i.preferTempAddress -> cfg.enableIPv6; + message = '' + Temporary addresses are only needed when IPv6 is enabled. + ''; })) ++ [ { assertion = cfg.hostId == null || (stringLength cfg.hostId == 8 && isHexString cfg.hostId); @@ -963,9 +978,10 @@ in "net.ipv6.conf.all.disable_ipv6" = mkDefault (!cfg.enableIPv6); "net.ipv6.conf.default.disable_ipv6" = mkDefault (!cfg.enableIPv6); "net.ipv6.conf.all.forwarding" = mkDefault (any (i: i.proxyARP) interfaces); - } // listToAttrs (concatLists (flip map (filter (i: i.proxyARP) interfaces) - (i: flip map [ "4" "6" ] (v: nameValuePair "net.ipv${v}.conf.${i.name}.proxy_arp" true)) - )); + } // listToAttrs (flip concatMap (filter (i: i.proxyARP) interfaces) + (i: flip map [ "4" "6" ] (v: nameValuePair "net.ipv${v}.conf.${i.name}.proxy_arp" true))) + // listToAttrs (flip map (filter (i: i.preferTempAddress) interfaces) + (i: nameValuePair "net.ipv6.conf.${i.name}.use_tempaddr" 2)); # Capabilities won't work unless we have at-least a 4.3 Linux # kernel because we need the ambient capability |