Some notes on preferred networking setup now that I see machines going up with posts:

https://mccullerlab.com/logs/lab/index.php?callRep=11985

and https://mccullerlab.com/logs/lab/index.php?callRep=11998

The lab LAN uses a specially configured subnet and DHCP. You should not need static IP addresses, since the DCHP server remembers and maintains the assigned addresses.

The subnet settings are:

192.168.248.1/21 (equivalent \21 mask is 255.255.248.0)

The gateway is 192.168.248.1

broadcast address is: 192.168.255.255 (can be calculated from the above with the tool https://jodies.de/ipcalc?host=192.168.248.1&mask1=21&mask2=21)

the following addresses are supported:

HostMin:   192.168.248.1    
HostMax:   192.168.255.254  
Hosts/Net: 2046

The synology is running the internal DNS server a internal LAN address 192.168.248.15 so it should be included in your resolve.conf or equivalent. DHCP currently assigns it as the secondary DNS server. The primary is a preferred CIT server. We could make the internal DNS the primary, but may have bigger issues if/when it goes down.

if you assign static IP's, please only assign them to addresses already registered by the DHCP to the particular MAC address of the interface.