I am observing the below error in my cisco 800 router running with latest cisco suggested version.
%DXMRVL_DRV_ERR-2-DXMRVL_DRV_INTER_ERR: DXMRVL driver Layer Internal Error: Could not remove entry from shadow table for port  Mac:************* on Vlan  for device [1
Can any one help to know the solution for the same.
Not sure what version you updated to now, i see couple of bugs reported as below, worth checking.
Cisco IOS Software, C800 Software (C800-UNIVERSALK9-M), Version 15.4(3)M10, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2018 by Cisco Systems, Inc.
Compiled Wed 08-Aug-18 06:30 by prod_rel_team
ROM: System Bootstrap, Version 15.4(1r)T1, RELEASE SOFTWARE (fc1)
uptime is 8 weeks, 4 days, 7 hours, 49 minutes
System returned to ROM by power-on
System restarted at 05:29:15 IST Sat Nov 10 2018
System image file is "flash:c800-universalk9-mz.SPA.154-3.M10.bin"
Last reload type: Normal Reload
Last reload reason: power-on
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Cisco C891F-K9 (revision 1.0) with 488524K/35763K bytes of memory.
Processor board ID ****************
1 FastEthernet interface
9 Gigabit Ethernet interfaces
1 Serial interface
1 ISDN Basic Rate interface
1 terminal line
1 Virtual Private Network (VPN) Module
DRAM configuration is 32 bits wide
255K bytes of non-volatile configuration memory.
254976K bytes of ATA System CompactFlash (Read/Write)