I have openvpn working, and I can ping via hostnames if they are in the dnsmasq hostfile, but currently I put them in the hostfile with a learn-address script. The problem is that this script only gets the common name from the cert and I want to use actual hostnames given by the client because I am using the same cert for some of my clients. All the solutions I have found use some sort of workaround, and I am assuming there is an official way to do this that does not involve me manually entering ip addresses and hostnames into a file and hoping that everything stays where it is.
For reference, here are my configs.
server.conf
port 1194
proto udp6
dev tun
user root
group root
persist-key
persist-tun
keepalive 10 120
topology subnet
server 10.9.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push "dhcp-option DNS 10.9.0.1"
push "dhcp-option DOMAIN mylocaldomain.lan"
push "dhcp-option DNS 8.8.8.8"
push "dhcp-option DNS 8.8.4.4"
push "redirect-gateway def1 bypass-dhcp"
#Respond to DNS = Yes
#Advertise DNS to client = Yes
server-ipv6 fd42:42:42:42::/112
tun-ipv6
push tun-ipv6
push "route-ipv6 2000::/3"
push "redirect-gateway ipv6"
dh none
ecdh-curve prime256v1
tls-crypt tls-crypt.key
crl-verify crl.pem
ca ca.crt
cert server.crt
key server.key
auth SHA256
cipher AES-128-GCM
ncp-ciphers AES-128-GCM
tls-server
tls-version-min 1.2
tls-cipher TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256
client-config-dir /etc/openvpn/ccd
status /var/log/openvpn/status.log
duplicate-cn
client-to-client
#script-security 3
#learn-address /etc/openvpn/learn-script.sh
verb 9
client.ovpn
client
proto udp
explicit-exit-notify
remote xxx.xxx.xxx.xxx 1194
dev tun
resolv-retry infinite
nobind
persist-key
persist-tun
remote-cert-tls server
verify-x509-name server name
auth SHA256
auth-nocache
cipher AES-128-GCM
tls-client
tls-version-min 1.2
tls-cipher TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256
#ignore-unknown-option block-outside-dns
#setenv opt block-outside-dns # Prevent Windows 10 DNS leak
push "redirect-gateway def1"
push "route-gateway dhcp"
dhcp-option DNS 10.9.0.1
up /etc/openvpn/update-resolv-conf
down /etc/openvpn/update-resolv-conf
verb 3
dnsmasq.conf
interface=tun0
addn-hosts=/tmp/hosts-openvpn
Since dns works, it just doesn't update automatically, I think the issue is that dhcp is not getting the hostname info in the first place, but I'm not sure where to go from here.
