From a network client I can ping the server and other devices on the same subnet.
The server cannot ping a windows client. Server can ping a Linux client. Server accesses the internet from the other ethernet port with no issue.
Clients cannot ping gateway or internet.
Networking & isc-dhcp-server services come up with no errors.
/etc/network/interfaces
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source /etc/network/interfaces.d/*
auto lo
iface lo inet loopback
auto eno1
iface eno1 inet static
address 192.168.190.20
netmask 255.255.255.0
broadcast 192.168.190.255
gateway 192.168.190.1
dns-nameservers 103.86.96.100
auto enp8s0
iface enp8s0 inet static
address 192.168.192.1
netmask 255.255.255.0
broadcast 192.168.192.255
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option domain-name "JP.home";
option domain-name-servers 8.8.8.8, 8.8.4.4;
default-lease-time 600;
max-lease-time 7200;
ddns-update-style none;
authoritative;
subnet 192.168.192.0 netmask 255.255.255.0 {
range 192.168.192.1 192.168.192.99;
option domain-name-servers 103.86.96.100, 103.86.99.100;
option routers 192.168.190.1;
option broadcast-address 192.168.192.255;
default-lease-time 600;
max-lease-time 7200;
}
host homelan {
hardware ethernet 40:2c:f4:e9:b9:df;
fixed-address 192.168.192.1;
}
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Apr 13 21:11:07 JPStudy systemd[1]: Started LSB: DHCP server.
Apr 13 21:11:52 JPStudy dhcpd[6550]: DHCPDISCOVER from 14:da:e9:a0:de:9e via enp8s0
Apr 13 21:11:52 JPStudy dhcpd[6550]: ICMP Echo reply while lease 192.168.192.1 valid.
Apr 13 21:11:52 JPStudy dhcpd[6550]: Abandoning IP address 192.168.192.1: pinged before offer
Apr 13 21:11:56 JPStudy dhcpd[6550]: DHCPDISCOVER from 14:da:e9:a0:de:9e via enp8s0
Apr 13 21:11:57 JPStudy dhcpd[6550]: DHCPOFFER on 192.168.192.2 to 14:da:e9:a0:de:9e (Danika-PC) via enp8s0
Apr 13 21:11:57 JPStudy dhcpd[6550]: DHCPREQUEST for 192.168.192.2 (192.168.192.1) from 14:da:e9:a0:de:9e (Danika-PC) via enp8s0
Apr 13 21:11:58 JPStudy dhcpd[6550]: DHCPACK on 192.168.192.2 to 14:da:e9:a0:de:9e (Danika-PC) via enp8s0
Apr 13 21:12:04 JPStudy dhcpd[6550]: DHCPINFORM from 192.168.192.2 via enp8s0
Apr 13 21:12:04 JPStudy dhcpd[6550]: DHCPACK to 192.168.192.2 (14:da:e9:a0:de:9e) via enp8s0
Apr 13 21:13:06 JPStudy dhcpd[6550]: DHCPINFORM from 192.168.192.2 via enp8s0
Apr 13 21:13:06 JPStudy dhcpd[6550]: DHCPACK to 192.168.192.2 (14:da:e9:a0:de:9e) via enp8s0
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21:13:43.866188 IP 192.168.192.2.netbios-ns > 192.168.192.255.netbios-ns: UDP, length 50
21:13:43.882086 ARP, Request who-has _gateway tell 192.168.192.2, length 46
21:13:44.765574 ARP, Request who-has _gateway tell 192.168.192.2, length 46
21:13:45.382031 ARP, Request who-has _gateway tell 192.168.192.2, length 46
21:13:46.382022 ARP, Request who-has _gateway tell 192.168.192.2, length 46
21:13:47.894873 IP 192.168.192.2.netbios-ns > 192.168.192.255.netbios-ns: UDP, length 50
21:13:48.644112 IP 192.168.192.2.netbios-ns > 192.168.192.255.netbios-ns: UDP, length 50
21:13:49.394261 IP 192.168.192.2.netbios-ns > 192.168.192.255.netbios-ns: UDP, length 50
21:13:49.451135 tell 192.168.192.2, length 46
21:13:50.160810 ARP, Request who-has _gateway tell 192.168.192.2, length 46
21:13:50.880944 ARP, Request who-has _gateway tell 192.168.192.2, length 46
Output from tcpdump -vv -i enp8s0 for Linux client
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tcpdump: listening on enp8s0, link-type EN10MB (Ethernet), capture size 262144 bytes
06:45:21.708797 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has _gateway tell 192.168.192.3, length 46
06:45:22.757205 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has _gateway tell 192.168.192.3, length 46
Ip forwarding seems to be enabled
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# cat /proc/sys/net/ipv4/ip_forward
1
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# ip route
default via 192.168.190.1 dev eno1 onlink
192.168.190.0/24 dev eno1 proto kernel scope link src 192.168.190.20
192.168.192.0/24 dev enp8s0 proto kernel scope link src 192.168.192.1
Any input would be appreciated.