Triple Speed Ethernet and Simple Socket Server on Arria V starter kit

Hello Altera Forums,

I am trying to get the Simple Socket Server working on an Arria V starter kit. I have created a Nios system to accomplish this. Here is a screenshot of the system:

https://i.imgur.com/AZOlZyc.png

I have connected the Nios system to the appropriate pins, and when I run the Simple Socket Server (RGMII), I get this response:

InterNiche Portable TCP/IP, v3.1 
Copyright 1996-2008 by InterNiche Technologies. All rights reserved. 
prep_tse_mac 0
Can't read the MAC address from your board. We will assign you
a MAC address.
Please enter your 9-digit serial number. This is printed on a 
label under your Nios dev. board. The first 3 digits of the 
label are ASJ and the serial number follows this.
 -->Created "Inet main" task (Prio: 2)
Created "clock tick" task (Prio: 3)
123456789
123456789
Your Ethernet MAC address is 00:07:ed:ff:cd:15
prepped 1 interface, initializing...
INFO    : TSE MAC 0 found at address 0x08202000
INFO    : PHY Marvell 88E1111 found at PHY address 0x00 of MAC Group
INFO    : PHY - Automatically mapped to tse_mac_device
INFO    : PHY - Restart Auto-Negotiation, checking PHY link...
INFO    : PHY - Auto-Negotiation PASSED
MARVELL : Mode changed to RGMII/Modified MII to Copper mode
MARVELL : Enable RGMII Timing Control
MARVELL : PHY reset
INFO    : PHY - Checking link...
INFO    : PHY - Link not yet established, restart auto-negotiation...
INFO    : PHY - Restart Auto-Negotiation, checking PHY link...
INFO    : PHY - Auto-Negotiation PASSED
INFO    : PHY - Link established
INFO    : PHY - Speed = 1000, Duplex = Full
OK, x=0, CMD_CONFIG=0x00000000
MAC post-initialization: CMD_CONFIG=0x0400020b
 RX descriptor chain desc (1 depth) created
mctest init called
IP address of et1 : 142.104.60.71
DHCP timed out, going back to default IP address(es)
Simple Socket Server starting up
 Simple Socket Server listening on port 30
Created "simple socket server" task (Prio: 4)

When I try to ping, I get no connection.

To debug, I connected signal tap to the RX[3..0] and TX[3..0] signals. I am seeing signal on the RX bus, but there is no data on the TX bus. The tx_enable pin is also never asserted. This is likely why the Simple Socket Server can't connect to the DHCP, but I can't figure out why there is no data on the TX bus.

Help me alteraforum, you're my only hope!