I have the same issue with new Xerox Versalink printers.
Affected models: C7025; B405
MAC: 9C:93:4E:XX:XX:XX

Update:
Problem fixed.
At DHCP Server->Networks->DHCP Options removed all entries (i've used for time zone offset and NTP server)

I suspect that your issue is more likely related to 6.38.rc19. I have been trying to build a config on an old RB750GL, in preparation for a new RB750Gr3, and it was giving me fits taking some configuration elements (mostly IPv6 related). The router becomes inaccessible an eventually restarts with c...

I am not impressed with the new RB750Gr3. Mainly, a lot of things working differently. Cannot make static address in DHCP, when address is not in any pool, . The worst thing, if i change DHCP range on Quick Set page and click on Apply, lost it's ip address and the device will be inaccessible. Then ...

I am not impressed with the new RB750Gr3. Mainly, a lot of things working differently. Cannot make static address in DHCP, when address is not in any pool, . The worst thing, if i change DHCP range on Quick Set page and click on Apply, lost it's ip address and the device will be inaccessible. Then r...