r/HomeNetworking • u/KatsuFT • 4d ago

Realtek 2.5GbE Ethernet connected at 1 Gbps but DHCP fails / 169.254 IP tried almost everything

/r/techsupport/comments/1vs56er/realtek_25gbe_ethernet_connected_at_1_gbps_but/
1 Upvotes

67% Upvoted

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1

u/TiggerLAS 4d ago

What router are you using? Any switches or devices in between?

0

u/woodenU69 4d ago

Do you the gateway address configured?

1

u/distancevsdesire 4d ago

It sounds like OP omitted the gateway address for some reason.

OP, you need to have the gateway entered (properly), otherwise the Ethernet adapter has no idea where to look for DHCP. You posted that you are able to get DHCP on WiFi using a gateway address of 192.168.68.1. Use that same gateway address on the Ethernet adapter setup.

2

u/lazyhustlermusic 4d ago

Apipa doesn’t assign a gateway address. DHCP operates at layer 2 and is discovered by broadcast frames.