[asterisk-users] is this expected behaviour?

[Al lists]

i noticed in asterisk 10.12.3, i get messages like this:

[2014-01-08 19:03:59] NOTICE[2987]: chan_sip.c:23900 handle_request_invite:
Failed to authenticate device 305<sip:305 at MY.SERVER.IP>;tag=0d516e63

but not mentioning attacker ip (to be used for fail2ban)

is this expected?
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