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nixos/network-interfaces-systemd: fix IPv6 privacy extensions

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networkd seems to be buggy with IPv6PrivacyExtensions=kernel being set,
and the addresses don't appear anymore. In fact, the corresponding
sysctl seems to be set to -1 again.

Fixes https://github.com/NixOS/nixpkgs/issues/106858.
Upstream Issue: https://github.com/systemd/systemd/issues/18003
This commit is contained in:
Florian Klink 2020-12-16 21:35:12 +01:00 committed by Frederik Rietdijk
parent 91b8237b48
commit d349582c07
1 changed files with 11 additions and 1 deletions
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12
nixos/modules/tasks/network-interfaces-systemd.nix
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@ -93,7 +93,17 @@ in
(if i.useDHCP != null then i.useDHCP else false));
address = forEach (interfaceIps i)
(ip: "${ip.address}/${toString ip.prefixLength}");
networkConfig.IPv6PrivacyExtensions = "kernel";
# IPv6PrivacyExtensions=kernel seems to be broken with networkd.
# Instead of using IPv6PrivacyExtensions=kernel, configure it according to the value of
# `tempAddress`:
networkConfig.IPv6PrivacyExtensions = {
# generate temporary addresses and use them by default
"default" = true;
# generate temporary addresses but keep using the standard EUI-64 ones by default
"enabled" = "prefer-public";
# completely disable temporary addresses
"disabled" = false;
}.${i.tempAddress};
linkConfig = optionalAttrs (i.macAddress != null) {
MACAddress = i.macAddress;
} // optionalAttrs (i.mtu != null) {