Hello everybody. First of all many thanks - all the knowledge i found here as been truly useful.
My problem is: When I manually configure a static IP via Network management in DSM, it doesnt stay as configured after any shutdown or reebot.
Background: I had successfully installed and configured DSM 6.1 with juns loader in a old pc i had lying around. As a first experiment I made it a movie server for my kodi htpc (over lubuntu). Both the NAS and the htpc had static IPs in that first config and everything was working really fine.
Then a 6.1.1 update appeared and i gave it a try. I updated through DSM update tab. The result was that i lost network access to my NAS. The NIC leds didnt even light up. The NAS was working tough, because it entered standby after the configured period of inactivity.
Then I tried a force install via the loader. That made the NIC come alive again and Synology Assistant found the NAS and a menu for updating in the web browser followed. I tried the first option - Migrating, to update maintaining configs and files but doing so got me in to the previous step, when i had no network. Afterwards i tried the second option, i believe it was called clean install, only maintaining the files. This option worked and i got the 6.1.1 webbrowser page working and accessing the NAS. I made it manually with the .pat downloaded from synology site.
First thing i did was restoring a previous config backup I had done when everything was working. Then i proceeded to alter everything not restored like NFS permissions config, task scheduler, etc. I also configured the static IP in the network tab and tried to alter the mtu (just to see if it worked for me with this new firmware, since it didnt whit the previous).
Everything seemed to be working fine. Until i made the first reboot.
After the reboot i cant ping the Nas. I also cant access via webbrowser or ssh.
In the Synology Assistant i get the entry for Diskstation, the IP i configured via DSM network management (192.168.1.4 out of the router dhcp scope), all the correct info, but the connection status reads connection failed or faillure (cant remember the exact expression - also is not in english). It promps me to correct the network config. After entering admin login i get a page where it reads that either i get DHCP provided IP or i can enter it manually. The fields come pre-filled with the following:
IP: 192.168.1.5 - which curiously is my htpc static IP, also out of the DHCP scope
dns server: 127.0.0.53
i then proceed to alter manualy to 22.214.171.124 and enter gateway 192.168.1.1 and DNS 192.168.1.1 and save, following what the Assistant lists my NAS as "ready". Everything operates nicely afterwards. It seems to me that it works even if i only enter the IP and leave other entries blank (i'm not sure, im away from home now).
I go to the network manager and i also find the gateway entry is blank. I redo the config. All works.
Until a reboot or shutdown.
After this i go back to the previous step where "In the Synology Assistant i get the entry for Diskstation, the IP i configured via DSM network management (192.168.1.4 out of the router dhcp scope), all the correct info, but the connection status reads connection failed or faillure" and " cant ping the Nas. I also cant access via webbrowser or ssh".
i tried configuring other ip (192.168.1.10 - also out of dhcp scope). It didnt work, also. The only difference was that when entering Assistant for manually configuring network the suggested IP was different (i dont remember well but it was a high value, no like when i introduce 192.168.1.4 that allways suggests 192.168.1.5).
Any ideas what i can do to get over this back to when it worked?
PS: Im thinking of dowgrading to 6.1 again but i'm afraid that it wont work also. I dont know. Pardon my subjectivity but it doesnt feel like a update problem... I found no one complaining about this after their update other than me in this forum.
Thanks for reading the long post.