Mr. I have two boards (one with s5p6818-debian-wifiap-sd8g-20171102, and another with Armbian_5.83_Nanopct3plus_Ubuntu_bionic_next_4.14.115_desktop), I do the same experiment:
1- Apply static ip in /etc/network/interfaces like:
source /etc/network/interfaces.d/* # Network is managed by Network manager auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 10.1.1.125
netmask 255.255.255.0
network 10.1.1.0
2- Update and upgrade packages from terminal.
3- Apply static ip ethernet on my computer 10.1.1.2
4- Finally: Test connection from board terminal: ping 10.1.1.2
so the output and performance are very different between tow boards:
Armbian (there are problems): I've attached the terminal log.
Debian (without any problems): debian ping output:
64 bytes from 10.1.1.2 (104.27.115.15): icmp_seq=1 ttl=58 time=1.52 ms
64 bytes from 10.1.1.2 (104.27.115.15): icmp_seq=2 ttl=58 time=0.950 ms
64 bytes from 10.1.1.2 (104.27.115.15): icmp_seq=3 ttl=58 time=1.86 ms
64 bytes from 10.1.1.2 (104.27.115.15): icmp_seq=3 ttl=58 time=1.54 ms
64 bytes from 10.1.1.2 (104.27.115.15): icmp_seq=3 ttl=58 time=1.51 ms
64 bytes from 10.1.1.2 (104.27.115.15): icmp_seq=3 ttl=58 time=1.55 ms
64 bytes from 10.1.1.2 (104.27.115.15): icmp_seq=3 ttl=58 time=1.45 ms
So where is the problem? I tried a lot of things without any progress ,thanks in advance.