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SRX interface flappinng "down reason tlv value (0x0)

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Hello,
I have a SRX in packet mode acting as an internet gateway (basically BGP multihoming on the northbound interfaces and connected to a pair of firewalls  in the south.

fw1-----ge-0/0/0
                               |--- SRX ----  ISP (multihoming)
fw2-----ge-0/0/1

Both internal interfaces are in the same vlan as well as the irb (which is  exported via BGP to the ISP providers).

I am seeng a a very persistent flapping behavior  with messages like this:

Oct 16 10:00:20 cpe1.cambridge.grapeshot.co.uk /kernel: if_pfe_linfo: Sending ifl down reason tlv value (0x0) for ifl(ge-0/0/0.0)
Oct 16 10:00:20 cpe1.cambridge.grapeshot.co.uk /kernel: if_pfe_linfo: Sending ifl down reason tlv value (0x0) for ifl(ge-0/0/0.0)
Oct 16 10:05:24 cpe1.cambridge.grapeshot.co.uk /kernel: if_pfe_linfo: Sending ifl down reason tlv value (0x0) for ifl(ge-0/0/0.0)

I haven't modified any CoS or spanning tree setting and  cabling and neighbor devices have been chcked. Any ideas?


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