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2configs/gg23.nix: enable IPv6 on internal network
Add ULA prefix fd42:7d6a::/64 on int0 with IPv6 Router Advertisement
so clients get IPv6 via SLAAC. Enable IPv6 forwarding and NAT66
masquerade for the ULA prefix. This fixes Jitsi (and other IPv6-only
services) not working from the internal network.
author
lassulus
date
(Mar 13, 2026, 12:47 PM CET)
commit
0a166656
0a16665646f50abb257cbe6a50379f33983bd0bf
parent
e3ade48a
e3ade48ab50395e127395fa0c2fbcf2a59bbde31
+19
-16
+19
-16
2configs/gg23.nix
+19
-16
2configs/gg23.nix
···
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systemd.network.networks."50-et0" = {
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matchConfig.Name = "et0";
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DHCP = "yes";
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-
# dhcpV4Config.UseDNS = false;
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-
# dhcpV6Config.UseDNS = false;
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linkConfig = {
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RequiredForOnline = "routable";
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};
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networkConfig = {
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-
LinkLocalAddressing = "no";
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+
IPv6AcceptRA = true;
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IPv6Forwarding = true;
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};
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# dhcpV6Config = {
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# PrefixDelegationHint = "::/60";
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# };
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# networkConfig = {
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# IPv6AcceptRA = true;
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# };
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# ipv6PrefixDelegationConfig = {
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-
# Managed = true;
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# };
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};
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boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
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+
boot.kernel.sysctl."net.ipv6.conf.all.forwarding" = 1;
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systemd.network.networks."10-int0" = {
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name = "int0";
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address = [
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"10.42.0.1/24"
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"fd42:7d6a::1/64"
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];
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networkConfig = {
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# IPForward = "yes";
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# IPMasquerade = "both";
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+
IPv4Forwarding = true;
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+
IPv6Forwarding = true;
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ConfigureWithoutCarrier = true;
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DHCPServer = "yes";
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# IPv6SendRA = "yes";
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# DHCPPrefixDelegation = "yes";
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IPv6SendRA = true;
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};
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ipv6Prefixes = [
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{
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ipv6PrefixConfig = {
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Prefix = "fd42:7d6a::/64";
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};
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}
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];
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dhcpServerStaticLeases = [
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{
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# printer
···
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{
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v6 = false;
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predicate = "-s 10.42.0.0/24";
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+
target = "MASQUERADE";
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}
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{
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v4 = false;
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predicate = "-s fd42:7d6a::/64";
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target = "MASQUERADE";
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}
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];