I installed from 9.065 to 9.070 firmware update and i was unable to ping any DNS server (google dns and Isp Dns)
And the strange error that I have dns provided from ISP, but in DNS forwarders shows none. See the pic for this error
Sorry but I couldn't see any log because i desperately needed internet and i re-imported the backup of 9.0 after 2 unsuccessfully restarts
After the restored the old backup everything seems ok