create a flag file in /mnt/live if network is set up by initrd,

make dhclient.service in slax check for this file and skip network reconfig if exists

Slax/debian/rootcopy/lib/systemd/system/dhclient.service

@@ -4,10 +4,11 @@ Documentation=man:dhclient(8)
 Wants=network.target
 After=network-pre.target systemd-sysctl.service systemd-modules-load.service
 Before=network.target shutdown.target network-online.target
+ConditionPathExists=/mnt/live/net.up.flag
 
 [Service]
 Type=forking
-ExecStart=-/bin/sh -c 'udevadm settle && cat /proc/cmdline | egrep -qvi " ip=| from=http" && dhclient -nw'
+ExecStart=-/bin/sh -c 'udevadm settle && dhclient -nw'
 PIDFile=/run/dhclient.pid
 
 [Install]

livekitlib

@@ -739,9 +739,10 @@ change_root()
 {
    debug_log "change_root" "$*"
 
-   # if we are booting over httpfs, we need to copyup these files so they are
+   # if we are booting over httpfs, we need to copyup some files so they are
    # accessible on union without any further lookup down, else httpfs locks
    if [ "$(network_device)" != "" ]; then
+      touch "/net.up.flag"
       touch "$1/etc/resolv.conf"
       touch "$1/etc/hosts"
       touch "$1/etc/gai.conf"