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<div>Good morning, we're using SIPWISE 11.1.1<br>
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In /var/log/ngcp/kamailio-proxy.log, we see many errors like this:<br>
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Aug 20 09:38:44.685185 sbc1 proxy[2016]: ERROR: <core> [core/udp_server.c:810]: udp_send(): sendto(sock, buf: 0x7fe2df70fea0, len: 338, 0, dst: (x.xxx.xxx.xx:5060), tolen: 16) - err: Invalid argument (22)<br>
Aug 20 09:38:44.685212 sbc1 proxy[2016]: CRITICAL: <core> [core/udp_server.c:817]: udp_send(): invalid sendtoparameters#012one possible reason is the server is bound to localhost and#012attempts to send to the net<br>
Aug 20 09:38:44.685225 sbc1 proxy[2016]: ERROR: nathelper [nathelper.c:2431]: nh_timer(): sip udp_send failed<br>
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What are they due to?</div>
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