This is really a guess because I have no idea about your network config, but assuming both those IP addresses are managed switches or routers, then it is probably a switching loop or a buggered routing table.
Packet is hitting the router/firewall and then some other device which is routing it back to the router either because it's routing table does not contain the path to the IP address you have specified or because some idiot has plugged the switch back into the router (directly or indirectly). The machine you are remotely accessing to contact the printer there is probably not using this same switch/router.
Check the wiring and see if maybe your console on the router or switch has some sort of warnings or logs that tell you what is happening.
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