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| author |  sommerfeld <sommerfeld@sommerfeld.dev> | 2026-05-29 11:18:14 +0100 |
|---|---|---|
| committer | sommerfeld <sommerfeld@sommerfeld.dev> | 2026-05-29 11:18:14 +0100 |
| commit | 5ee66a0415e88f4fa78986c823dd1ad709524e70 (patch) | |
| tree | 57cffb07e398a55407b94fa3695e5fdcb5b91c5a | |
| parent | 01df321e907b6c8568bb8622eb44a5c1486a0631 (diff) | |
| download | dotfiles-5ee66a0415e88f4fa78986c823dd1ad709524e70.tar.gz dotfiles-5ee66a0415e88f4fa78986c823dd1ad709524e70.tar.bz2 dotfiles-5ee66a0415e88f4fa78986c823dd1ad709524e70.zip | |
fix(iwd): revert MAC randomization — broke DHCP
`AddressRandomization=network` made iwd present a per-SSID random MAC
to every Wi-Fi network. On networks that pin DHCP leases or 802.1X
access to a specific hardware MAC (corporate Wi-Fi, routers with DHCP
reservations, MAC-filtered networks) this means iwd associates fine
but DHCP never completes — the new MAC is unknown to the upstream.
The privacy gain is marginal when the user only connects to a small
set of known APs anyway, and the cost (no IP on a familiar network)
is much worse than the threat model justified. Drop the override
entirely; iwd's defaults (permanent MAC, no IP config — systemd-networkd
remains the IP-layer authority via etc/systemd/network/30-wifi-bond0.network)
match what we actually want.
If we want privacy MAC again later, the right place is a systemd .link
file with MACAddressPolicy=random, applied per-interface, not iwd-wide.
| -rw-r--r-- | etc/iwd/main.conf | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/etc/iwd/main.conf b/etc/iwd/main.conf deleted file mode 100644 index cfeed7e..0000000 --- a/etc/iwd/main.conf +++ /dev/null @@ -1,23 +0,0 @@ -# iwd is started as the Wi-Fi backend; systemd-networkd remains the -# authoritative IP-layer manager (see etc/systemd/network/30-wifi-bond0.network -# which enslaves the wlan interface into bond0). -# -# AddressRandomization=network — iwd picks a deterministic random MAC -# per SSID. Same network always reconnects with the same MAC (so DHCP -# leases, WPA-EAP creds, and captive-portal sessions stay stable across -# reconnects), but a hostile AP on a different SSID never sees the -# hardware MAC. Better than per-association random which trips captive -# portals on every reconnect. - -[General] -EnableNetworkConfiguration=false -UseDefaultInterface=false -AddressRandomization=network - -[Network] -EnableIPv6=true -NameResolvingService=systemd -RoutePriorityOffset=200 - -[Scan] -DisablePeriodicScan=false |