Every now and then (especially when downloading large files), the ethernet simply stops working with the following log in dmesg.
Unloading the r8152 module results in gnome-shell dying. After reloading it, ethernet still doesn't work. Disconnecting the Dock in this state kills everything from GDM down to my user session.

[159642.248648] pcieport 0000:00:1c.0: AER: Corrected error received: id=00e0
[159642.248666] pcieport 0000:00:1c.0: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e0(Transmitter ID)                                      
[159642.248680] pcieport 0000:00:1c.0:   device [8086:9d10] error status/mask=00001000/00002000                                                               
[159642.248690] pcieport 0000:00:1c.0:    [12] Replay Timer Timeout            
[159661.087306] xhci_hcd 0000:0a:00.0: port 1 resume PLC timeout
[159667.687492] xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13                                        
[159667.687514] xhci_hcd 0000:09:00.0: Looking for event-dma 00000004694bc010 trb-start 00000003a0cfefe0 trb-end 00000003a0cfefe0 seg-start 00000003a0cfe000 seg-end 00000003a0cfeff0
[159667.687610] xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13                                        
[159667.687627] xhci_hcd 0000:09:00.0: Looking for event-dma 00000004694bc020 trb-start 00000003a0cfefe0 trb-end 00000003a0cfefe0 seg-start 00000003a0cfe000 seg-end 00000003a0cfeff0
[159667.687722] xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13                                        
[159667.687735] xhci_hcd 0000:09:00.0: Looking for event-dma 00000004694bc030 trb-start 00000003a0cfefe0 trb-end 00000003a0cfefe0 seg-start 00000003a0cfe000 seg-end 00000003a0cfeff0
[159667.687829] xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13                                        
[159667.687838] xhci_hcd 0000:09:00.0: Looking for event-dma 00000004694bc040 trb-start 00000003a0cfefe0 trb-end 00000003a0cfefe0 seg-start 00000003a0cfe000 seg-end 00000003a0cfeff0
[159667.687971] xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13                                        
[159667.687988] xhci_hcd 0000:09:00.0: Looking for event-dma 00000004694bc050 trb-start 00000003a0cfefe0 trb-end 00000003a0cfefe0 seg-start 00000003a0cfe000 seg-end 00000003a0cfeff0
[159667.723135] xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13                                        
[159667.723158] xhci_hcd 0000:09:00.0: Looking for event-dma 00000004694bc060 trb-start 00000003a0cfefe0 trb-end 00000003a0cfefe0 seg-start 00000003a0cfe000 seg-end 00000003a0cfeff0
[159667.723202] xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13                                        
[159667.723219] xhci_hcd 0000:09:00.0: Looking for event-dma 00000004694bc070 trb-start 00000003a0cfefe0 trb-end 00000003a0cfefe0 seg-start 00000003a0cfe000 seg-end 00000003a0cfeff0
[159667.723353] xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13                                        
[159667.723377] xhci_hcd 0000:09:00.0: Looking for event-dma 00000004694bc080 trb-start 00000003a0cfefe0 trb-end 00000003a0cfefe0 seg-start 00000003a0cfe000 seg-end 00000003a0cfeff0
[159677.276387] xhci_hcd 0000:0a:00.0: port 1 resume PLC timeout
[159680.097507] r8152 4-1.2:1.0 enp9s0u1u2: Tx timeout
[159680.119840] net_ratelimit: 329 callbacks suppressed
[159680.119852] r8152 4-1.2:1.0 enp9s0u1u2: Tx status -2
[159680.132667] r8152 4-1.2:1.0 enp9s0u1u2: Tx status -2
[159680.142497] r8152 4-1.2:1.0 enp9s0u1u2: Tx status -2
[159680.152489] r8152 4-1.2:1.0 enp9s0u1u2: Tx status -2
[159682.780110] usb 4-1.2: reset SuperSpeed USB device number 3 using xhci_hcd
[159700.007384] xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13