xt_CT: No such helper "sip"

I've upgraded today a few routers to 19.07.2.

Those routers have a VLAN configured for Movistar VoIP and it is working, however, I see a new message being repeated in the logs:

xt_CT: No such helper "sip"

Any hint about what is that and how to avoid it?

If its working, I'd advise nothing; but you can install the SIP connection track helper.

What exactly should install ?

If is not needed I will prefer not installing anything else, but also getting rid off the message ...


Thanks! I just did and is not complaining anymore and still working :wink:

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