Expand LAN to 10.0.0.0/22 with static/reserved/dynamic/spare zones

Splits the LAN into four /24 zones: 10.0.0.0/24 static (no DHCP, DNS
only), 10.0.1.0/24 fixed DHCP reservations by MAC, 10.0.2.0/24 dynamic
DHCP pool, 10.0.3.0/24 spare/unused. ipadm now derives the required
subnet from whether a host has a MAC, auto-assigns free IPs, and
auto-migrates a host's IP when its MAC is added/removed. Migrated the
existing archerc80 reservation from 10.0.0.2 to 10.0.1.2.

Also fixes a latent bug found while doing this: dnsmasq's SIGHUP
(`systemctl reload`) only re-reads /etc/hosts, not the conf-dir files
ipadm writes to, so config changes were silently not applied on
reload. ipadm now restarts dnsmasq instead.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

This commit is contained in:

mike

2026-08-21 08:57:58 +02:00

co-authored by

Claude Sonnet 5

parent 78beedeabc

commit c135f205fa

10 changed files with 364 additions and 112 deletions

config/nftables.conf

+1 -1

View File

@@ -17,7 +17,7 @@ table inet filter {
 table inet nat {
 	chain postrouting {
 		type nat hook postrouting priority srcnat;
 		ip saddr 10.0.0.0/24 oifname "enp3s0" masquerade
 		ip saddr 10.0.0.0/22 oifname "enp3s0" masquerade
 	}
 }