Can't install Transmission plugin--seems to break TrueNAS networking

[taylornate]

This is TrueNAS-12.0-U3 core, freshly installed on bare metal.

When I try to install the Transmission plugin, it gets around half done and then I get an error:

"Error: transmission had a failure Exception: RuntimeError Message: pkg.FreeBSD.org could not be reached via DNS, check transmission's network configuration Partial plugin destroyed"

Prior to attempting the plugin installation, internet access from TrueNAS seems to be working just fine--I can ping URLs, etc. After I close the error, I can no longer even ping my gateway, though I can ping back to my desktop pc that I'm accessing the web UI from. Everything goes back to normal after rebooting TrueNAS. I attempted this installation 3 times with the same result each time. The Plex plugin installed fine.

motherboard: Supermicro X8DTN+
cpu: Dual Intel Xeon E5645 2.6 Hex Core CPU
memory: 72GB (18x 4GB DDR3 ECC REG Memory)
boot storage: LSI 9211-4i IR mode - 2x Kingston UV400 SATA 120GB SSD in RAID1,
pool storage: LSI 9211-8i IT mode - 15x 2TB HGST ultrastar 7200 RPM (used) (14x mirrored pairs + 1 hot spare)
Chelsio T420-CR dual 10GBe SFP+

 

[Devins07]

ever figure this out? i have a similar issue

 

[hAtul]

Same here
Network setting are well set too. Gateway to my router IP, DNS address as the router dns, without these I won't be able to update Plex.
But I think this one happens from a different issue.