Re: misc/60038: Thinkpad X270 with Ethernet on USBC ifconfig reports wrong speed

["David H. Gutteridge via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR misc/60038; it has been noted by GNATS.

From: "David H. Gutteridge" <david%gutteridge.ca@localhost>
To: Gnats Bugs <gnats-bugs%netbsd.org@localhost>
Cc: 
Subject: Re: misc/60038: Thinkpad X270 with Ethernet on USBC ifconfig reports
 wrong speed
Date: Wed, 25 Feb 2026 12:27:30 -0500

 On Wed, 25 Feb 2026 at 08:09:39 -0600, Jonathan A. Kollasch wrote:
 >> [     3.115327] ure0: RTL8153 unknown ver 6010
 
 > This is likely the source of the issue: the driver doesn't (yet) fully
 > support your USB to Ethernet adapter.
 
 It's true that this chip revision has some differences, from looking at
 the OpenBSD driver. (This was already something I was examining,
 bringing support for this exact variant over to our code.)
 
 Though, here's my example of the same (well, almost):
 
 [     1.696515] ure0 at uhub0 port 1
 [     1.696515] ure0: Realtek (0x0bda) USB 10/100/1000 LAN (0x8153), rev 
 3.00/31.00, addr 1
 [     1.696515] ure0: RTL8153 unknown ver 6010
 [     1.756517] rgephy2 at ure0 phy 0: RTL8251 1000BASE-T media 
 interface, rev. 0
 
 ure0: flags=0x8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
 	capabilities=0x2aa00<IP4CSUM_Tx,TCP4CSUM_Tx,UDP4CSUM_Tx,TCP6CSUM_Tx>
 	capabilities=0x2aa00<UDP6CSUM_Tx>
 	enabled=0
 	ec_capabilities=0x1<VLAN_MTU>
 	ec_enabled=0
 	address: f2:00:8e:82:c2:c6
 	media: Ethernet autoselect (1000baseT full-duplex)
 	status: active
 
 It does set/support gigabit for me, which suggests there could be
 something else at play with NetBSD as well.
 
 Regards,
 
 Dave