000966: Oct 11 2023 17:14:40 WIB: %SIP-3-INTERNAL: Connection failed for addr=52.114.76.76, port=9610, connId=15602
000967: Oct 11 2023 17:15:30 WIB: %SIP-3-INTERNAL: Connection failed for addr=52.114.76.76, port=5061, connId=15599
000968: Oct 11 2023 17:15:39 WIB: %SIP-3-INTERNAL: Connection failed for addr=52.114.75.24, port=26689, connId=15604
000969: Oct 11 2023 17:15:55 WIB: %SIP-3-INTERNAL: Connection failed for addr=52.114.14.70, port=3276, connId=15593
000970: Oct 11 2023 17:16:13 WIB: %SIP-3-INTERNAL: Connection failed for addr=52.114.148.0, port=59010, connId=15566
Has anyone ever seen this specific error before in syslog? I couldn't find anything related to it while searching.
Cisco IOS XE Software, Version 17.03.04a