CentOS

I have added an access point to one of my centos boxes:

nmcli con add type wifi ifname wlp1s0 mode ap con-name wlp1s0 802-11-wireless.ssid MyAPSSID
nmcli con modify wlp1s0 802-11-wireless.band bg connection.autoconnect yes 802-11-wireless-security.key-mgmt wpa-psk
nmcli con modify wlp1s0 802-11-wireless-security.psk MYAPKEY ipv4.addr 192.168.1.0/17 ipv4.method shared
nmcli con up wlp1s0


bringing this interface up launches a dnsmasq session with these parameters:

/usr/sbin/dnsmasq --conf-file=/dev/null --no-hosts --keep-in-foreground --bind-interfaces --except-interface=lo --clear-on-reload --strict-order --listen-address=192.168.1.0 --dhcp-range=192.168.1.10,192.168.1.254,60m --dhcp-lease-max=50 --dhcp-leasefile=/var/lib/NetworkManager/dnsmasq-wlp1s0.leases --pid-file=/run/nm-dnsmasq-wlp1s0.pid --conf-dir=/etc/NetworkManager/dnsmasq-shared.d


Can someone tell me how to change the default IP address range used (e.g. where are these command-line options coming from so I can change the --dhcp-range option) ?

Or, better yet, since I already have a DHCP server on my network, is there a way to simply have the access point obtain its IP addresses for clients from that DHCP server?

My linksys/ciscp routers are in bridged mode and obtain their addresses from my DHCP server.

thats good to know but really doesn't answer my question.

There should be directly editable file in /etc/NetworkManager/system-connections/
Alas, there probably isn't a value that we desire any more than as nmcli option.

The --dhcp-range CLI option for dnsmasq overrides what you could add in file in
/etc/NetworkManager/dnsmasq-shared.d/

I'd say: start the connection without dnsmasq (ipv4.method manual ?)
Then run a separate DHCP (dnsmasq) that you have more control over.

jlehtone wrote: ↑

2020/12/31 15:53:59

There should be directly editable file in /etc/NetworkManager/system-connections/
Alas, there probably isn't a value that we desire any more than as nmcli option.

Sadly, there isn't a file anywhere in the /etc/NetworkManager structure which appears to contain this DHCP range or DNSMASQ setup (there's no files whatsoever in the directory you mentioned, which is the 1st place I looked).

I've also looked in /usr/lib/NetworkManager and /var/[lib|run]/NetworkManager

The --dhcp-range CLI option for dnsmasq overrides what you could add in file in
/etc/NetworkManager/dnsmasq-shared.d/

unfortunately I cannot find a file anywhere which sets the options for the dnsmasq session launched by NetworkManager for the wifi access point.

I'd say: start the connection without dnsmasq (ipv4.method manual ?)
Then run a separate DHCP (dnsmasq) that you have more control over.

Not sure this is possible. the connection type is shared as an access point. if I mark it as manual and specify an ip address it doesn't seem tow work.