Hello,

I'm getting this error in Kamailio log every now and then. Can anyone
suggest methods to debug this further for root cause?

Jun 27 10:04:09  /usr/sbin/kamailio[26341]: CRITICAL: dialog
[dlg_hash.c:1098]: next_state_dlg(): bogus event 5 in state 4 for dlg
0x7fceeabf8d38 [749:3185] with clid
'SDceked01-e4d2e93d7f9ffe88907206a25ccdbcc2-v300g00030' and tags
'SDceked01-ecd4281b' '14001358846426'

Behaviour in the call:
When I look at the SIP flow from this call I can see that a PRACK
message which is routed to Kamailio gets discarded (=the proxy does
not route the PRACK onwards to the UA that requested the usage of the
100rel in 183 session progress message.) The PRACK message itself
seems valid and when compared to a PRACK from a working call, there is
no difference in the content.

Cheers,
Olli

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