Gfilui

I am trying to use my Raspberry Pi as a Wifi hot spot and have been following the following guide: Pi as wifi hotspot. However I have run into several issues, possibly related, that weren't completely solved through other similar questions asked on here when it comes to connecting an external device to the wifi.

Just to note, currently my pi is plugged into an ethernet cable which goes to a hub that is fed from another ethernet cable connected to the router. The Pi 3B+ is using the built in wifi

Starting the hostapd service would seem to be fine and comes up on my phone as an available network:

pi@raspberrypi:~ $ sudo /usr/sbin/hostapd /etc/hostapd/hostapd.conf
Configuration file: /etc/hostapd/hostapd.conf
Failed to create interface mon.wlan0: -95 (Operation not supported)
wlan0: interface state UNINITIALIZED->COUNTRY_UPDATE
wlan0: Could not connect to kernel driver
Using interface wlan0 with hwaddr b8:27:eb:43:56:bc and ssid "Stuxnet"
wlan0: interface state COUNTRY_UPDATE->ENABLED
wlan0: AP-ENABLED 

However, when attempting to start the isc-dhcp-server I get the following:

pi@raspberrypi:~ $ sudo service isc-dhcp-server start
Job for isc-dhcp-server.service failed because the control process exited 
with error code.
See "systemctl status isc-dhcp-server.service" and "journalctl -xe" for 
details.

journalctl -xe spits out the following:

pi@raspberrypi:~ $ journalctl -xe
Apr 09 00:23:34 raspberrypi dhcpd[2265]: Not configured to listen on any 
interfa
Apr 09 00:23:34 raspberrypi dhcpd[2265]: 
Apr 09 00:23:34 raspberrypi dhcpd[2265]: If you think you have received 
this mes
Apr 09 00:23:34 raspberrypi dhcpd[2265]: than a configuration issue 
please read 
Apr 09 00:23:34 raspberrypi dhcpd[2265]: bugs on either our web page at 
www.isc.
Apr 09 00:23:34 raspberrypi dhcpd[2265]: before submitting a bug. These 
pages e
Apr 09 00:23:34 raspberrypi dhcpd[2265]: process and the information we 
find hel
Apr 09 00:23:34 raspberrypi dhcpd[2265]: 
Apr 09 00:23:34 raspberrypi dhcpd[2265]: exiting.
Apr 09 00:23:36 raspberrypi isc-dhcp-server[2253]: Starting ISC DHCPv4 
server: d
Apr 09 00:23:36 raspberrypi isc-dhcp-server[2253]: failed!
Apr 09 00:23:36 raspberrypi systemd[1]: isc-dhcp-server.service: Control 
process
Apr 09 00:23:36 raspberrypi systemd[1]: Failed to start LSB: DHCP server.
-- Subject: Unit isc-dhcp-server.service has failed
-- Defined-By: systemd
-- Support: https://www.debian.org/support
-- 
-- Unit isc-dhcp-server.service has failed.
-- 
-- The result is failed.
Apr 09 00:23:36 raspberrypi systemd[1]: isc-dhcp-server.service: Unit 
entered fa
Apr 09 00:23:36 raspberrypi systemd[1]: isc-dhcp-server.service: Failed 
with res
Apr 09 00:23:36 raspberrypi sudo[2225]: pam_unix(sudo:session): session 
closed f
lines 1901-1923/1923 (END)
Apr 09 00:23:34 raspberrypi dhcpd[2265]: Not configured to listen on any 
interfaces!
Apr 09 00:23:34 raspberrypi dhcpd[2265]: 
Apr 09 00:23:34 raspberrypi dhcpd[2265]: If you think you have received 
this message due to a bug rather
Apr 09 00:23:34 raspberrypi dhcpd[2265]: than a configuration issue 
please read the section on submitting
Apr 09 00:23:34 raspberrypi dhcpd[2265]: bugs on either our web page at 
www.isc.org or in the README file
Apr 09 00:23:34 raspberrypi dhcpd[2265]: before submitting a bug. These 
pages explain the proper
Apr 09 00:23:34 raspberrypi dhcpd[2265]: process and the information we 
find helpful for debugging..
Apr 09 00:23:34 raspberrypi dhcpd[2265]: 
Apr 09 00:23:34 raspberrypi dhcpd[2265]: exiting.
Apr 09 00:23:36 raspberrypi isc-dhcp-server[2253]: Starting ISC DHCPv4 
server: dhcpdcheck syslog for diagnostics. ... failed!
Apr 09 00:23:36 raspberrypi isc-dhcp-server[2253]: failed!
Apr 09 00:23:36 raspberrypi systemd[1]: isc-dhcp-server.service: Control 
process exited, code=exited status=1
Apr 09 00:23:36 raspberrypi systemd[1]: Failed to start LSB: DHCP server.
-- Subject: Unit isc-dhcp-server.service has failed
-- Defined-By: systemd
-- Support: https://www.debian.org/support
-- 
-- Unit isc-dhcp-server.service has failed.
-- 
-- The result is failed.
Apr 09 00:23:36 raspberrypi systemd[1]: isc-dhcp-server.service: Unit 
entered failed state.
Apr 09 00:23:36 raspberrypi systemd[1]: isc-dhcp-server.service: Failed 
with result 'exit-code'.
Apr 09 00:23:36 raspberrypi sudo[2225]: pam_unix(sudo:session): session 
closed for user root

My config files are as follows,

dhcp [truncated]:

# If this DHCP server is the official DHCP server for the local
# network, the authoritative directive should be uncommented.
authoritative;



 # deny members of "foo";
# range 10.0.29.10 10.0.29.230;
# }
#}

subnet 192.168.42.0 netmask 255.255.255.0
 range 192.168.42.10 192.168.42.50;
 option broadcast-address 192.168.42.255;
 option routers 192.168.42.1;
 default-lease-time 600;
 max-lease-time 7200;
 option domain-name "local";
 option domain-name-servers 8.8.8.8, 8.8.4.4;

/etc/default/isc-dhcp-server:

# Defaults for isc-dhcp-server (sourced by /etc/init.d/isc-dhcp-server)

# Path to dhcpd's config file (default: /etc/dhcp/dhcpd.conf).
#DHCPDv4_CONF=/etc/dhcp/dhcpd.conf
#DHCPDv6_CONF=/etc/dhcp/dhcpd6.conf

# Path to dhcpd's PID file (default: /var/run/dhcpd.pid).
#DHCPDv4_PID=/var/run/dhcpd.pid
#DHCPDv6_PID=/var/run/dhcpd6.pid

# Additional options to start dhcpd with.
# Don't use options -cf or -pf here; use DHCPD_CONF/ DHCPD_PID instead
#OPTIONS=""

# On what interfaces should the DHCP server (dhcpd) serve DHCP requests?
# Separate multiple interfaces with spaces, e.g. "eth0 eth1".
INTERFACESv4="wlan0"
INTERFACESv6="wlan0"

/etc/network/interfaces:

# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

auto eth0
allow-hotplug eth0
iface eth0 inet dhcp

allow-hotplug wlan0
iface wlan0 inet static
address 192.168.42.1
netmask 225.225.225.0

I attempted some things from other questions on here such as starting with ifup wlan0:

pi@raspberrypi:~ $ sudo ifup wlan0
Error: inet prefix is expected rather than "192.168.42.1/225.225.225.0".
ifup: failed to bring up wlan0

Phones will connect to the spot but without a connection -- it gets to the handshake and then holds:

wlan0: STA 90:60:f1:b2:fc:96 IEEE 802.11: associated
wlan0: AP-STA-CONNECTED 90:60:f1:b2:fc:96
wlan0: STA 90:60:f1:b2:fc:96 RADIUS: starting accounting session 
5ACAC8C4-00000000
wlan0: STA 90:60:f1:b2:fc:96 WPA: pairwise key handshake completed (RSN)

Hopefully it's just a typo I missed somewhere but I can't quite figure it out. This is a fresh install as well.