Bridge network half duplex

[ozan1]

I bridged 10 routers via a Network Bridge and I keep getting these messages in the logs.

%CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet1 (not half duplex), with SW1 Ethernet2/3 (half duplex)

This is the device EVE-NG is installing. Is there any way to tweak it? Other than the warning, it is working fine and appears to be a false positive so far.

R1#sh cdp nei g1 detail
-------------------------
Device ID: SW1
Entry address(es):
Platform: Linux Unix, Capabilities: Router Switch IGMP
Interface: GigabitEthernet1, Port ID (outgoing port): Ethernet2/3
Holdtime : 149 sec

Version :
Cisco IOS Software, Linux Software (I86BI_LINUXL2-ADVIPSERVICESK9-M), Version 15.2(CML_NIGHTLY_20151103)FLO_DSGS7, EARLY DEPLOYMENT DEVELOPMENT BUILD, synced to FLO_DSGS7_POSTCOLLAPSE_TEAM_TRACK_DSGS_PI5
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Wed 04-Nov-15 02:31 by mmen

advertisement version: 2
VTP Management Domain: ''
Native VLAN: 1
Duplex: half (Mismatch)