Junos OS

Hi all,

Already half of the year i try to solve this problem with "USP_IF_TOOLKIT: Duplicate attach for ifl_indexXX, flags 3, localaddr 0xXXXXXXXX local_plen 32"

Junos with version 18.4R3-S2

This error / log / notification directly affected to all connecton with untrust interface (ge0/0/0), connection dropped to 5-10 minutes

All IP address on all interfaces are different 

Maybe somebody had this problem before and solved it somehow

messages | grep 'Dup'

May 13 13:49:56 SRXFW USP_IF_TOOLKIT: Duplicate attach for ifl_index84, flags 3, localaddr 0x122ab5a7 local_plen 32
May 13 13:50:02 SRXFW USP_IF_TOOLKIT: Duplicate attach for ifl_index84, flags 3, localaddr 0x116ceb73 local_plen 32
May 13 15:17:15 SRXFW USP_IF_TOOLKIT: Duplicate attach for ifl_index84, flags 3, localaddr 0xc530ccf local_plen 32
May 13 15:17:20 SRXFW USP_IF_TOOLKIT: Duplicate attach for ifl_index84, flags 3, localaddr 0x1229fbc3 local_plen 32
May 13 16:06:45 SRXFW USP_IF_TOOLKIT: Duplicate attach for ifl_index84, flags 3, localaddr 0xc530ccf local_plen 32
May 13 16:06:51 SRXFW USP_IF_TOOLKIT: Duplicate attach for ifl_index84, flags 3, localaddr 0x122906ab local_plen 32
May 13 20:02:45 SRXFW USP_IF_TOOLKIT: Duplicate attach for ifl_index84, flags 3, localaddr 0x122c3567 local_plen 32
May 13 20:02:50 SRXFW USP_IF_TOOLKIT: Duplicate attach for ifl_index84, flags 3, localaddr 0x122768fb local_plen 32
May 13 20:24:56 SRXFW USP_IF_TOOLKIT: Duplicate attach for ifl_index84, flags 3, localaddr 0xc530ccf local_plen 32
May 13 20:25:01 SRXFW USP_IF_TOOLKIT: Duplicate attach for ifl_index84, flags 3, localaddr 0x122906ab local_plen 32
May 13 21:04:18 SRXFW USP_IF_TOOLKIT: Duplicate attach for ifl_index83, flags 3, localaddr 0x1229f5b7 local_plen 32
May 13 21:04:23 SRXFW USP_IF_TOOLKIT: Duplicate attach for ifl_index83, flags 3, localaddr 0x1155e2f3 local_plen 32

Please post all logs when the issue appears, this will help to evaluate the cause of these messages.

These messages USP_IF_TOOLKIT: Duplicate attach for ifl_indexXX, flags 3, localaddr 0xXXXXXXXX local_plen 32" are informational only that a duplicate address is assigned on an IFL.

Do you have VRRP configured around this interface? Any secondary IP on the same interface?

Also, check the upstream device(s) if the interface is flapping on that side. 

Check the KB here: 

https://kb.juniper.net/InfoCenter/index?page=content&id=KB35058&actp=RSS