`errorListenerSide=delivery-failed (destination unreachable) errorConnectorSide=proton:io (Broken pipe - async disconnect 172.17.61.158:9443)`

[vsomwanshi]

Describe the bug

We have noticed below error in skupper-router pods in multiple sites.

2025-11-08 03:05:38.731970 +0000 FLOW_LOG (info) BIFLOW_TPORT [mnkbl:29] BEGIN END parent=mnkbl:4 sourceHost=10.129.6.234 sourcePort=36306 octets=5394 latency=26244 trace=0/isd-pl-c87b45ad51e0-skupper-router-84b667b8d4-mnkbl octetsReverse=4436 connector=c2cmf:134 processLatency=3431 proxyHost=172.17.35.43 proxyPort=40426 errorListenerSide=delivery-failed (destination unreachable) errorConnectorSide=proton:io (Broken pipe - async disconnect 172.17.61.158:9443)
2025-11-08 03:10:38.624245 +0000 FLOW_LOG (info) BIFLOW_TPORT [mnkbl:30] BEGIN END parent=mnkbl:4 sourceHost=10.129.6.234 sourcePort=36310 octets=5395 latency=24465 trace=0/isd-pl-c87b45ad51e0-skupper-router-84b667b8d4-mnkbl octetsReverse=4436 connector=c2cmf:142 processLatency=2451 proxyHost=172.17.35.43 proxyPort=60144 errorListenerSide=delivery-failed (destination unreachable) errorConnectorSide=proton:io (Broken pipe - async disconnect 172.17.46.73:9443)
2025-11-08 03:10:38.624295 +0000 FLOW_LOG (info) BIFLOW_TPORT [mnkbl:31] BEGIN END parent=mnkbl:4 sourceHost=10.129.6.234 sourcePort=36324 octets=5393 latency=25615 trace=0/isd-pl-c87b45ad51e0-skupper-router-84b667b8d4-mnkbl octetsReverse=4436 connector=c2cmf:132 processLatency=3519 proxyHost=172.17.35.43 proxyPort=52416 errorListenerSide=delivery-failed (destination unreachable) errorConnectorSide=proton:io (Broken pipe - async disconnect 172.17.19.116:9443)
2025-11-08 03:10:38.624311 +0000 FLOW_LOG (info) BIFLOW_TPORT [mnkbl:32] BEGIN END parent=mnkbl:4 sourceHost=10.129.6.234 sourcePort=57444 octets=5394 latency=24216 trace=0/isd-pl-c87b45ad51e0-skupper-router-84b667b8d4-mnkbl octetsReverse=4436 connector=c2cmf:142 processLatency=2167 proxyHost=172.17.35.43 proxyPort=35700
2025-11-08 03:12:21.465176 +0000 ROUTER (info) ram:2.79GiB vm:611.84MiB rss:98.31MiB pool:20.16KiB qdtm_router_t:128:0 qd_timer_t:64:0 qd_tls_context_t:64:0 qd_tls_config_t:64:0 qd_tls_session_t:192:0 qd_proton_config_t:64:0 qdr_core_timer_t:64:0 qdr_terminus_t:320:64 qdr_action_t:256:256 qdr_field_t:256:128 qdr_connection_info_t:384:64 qdr_connection_ref_t:64:0 qdr_link_work_t:448:192 qdr_general_work_t:448:64 qdr_delivery_cleanup_t:512:0 qdr_link_ref_t:960:64 qdr_link_t:576:128 qdr_delivery_ref_t:256:256 qdr_node_t:64:0 qdr_address_config_t:64:0 qdr_address_t:384:0 qdr_forward_deliver_info_t:64:0 qdr_error_t:384:128 qdr_delivery_t:320:128 qdr_connection_work_t:448:64 qdr_connection_t:384:64 qdr_query_t:64:0 qdr_address_watch_t:64:0 vflow_work_t:256:128 vflow_record_t:320:192 vflow_attribute_data_t:1088:448 qd_parse_node_t:128:0 qd_parse_tree_t:64:0 qd_parsed_field_t:384:192 qd_message_content_t:320:192 qd_message_t:512:192 qd_log_entry_t:240:0 qd_iterator_t:384:256 qd_hash_handle_t:512:0 qd_hash_item_t:512:0 qd_delivery_state_t:320:64 qd_composed_field_t:448:0 qd_composite_t:448:0 qd_buffer_t:608:368 qd_bitmask_t:576:128 qd_http1_decoder_connection_t:256:0 qdpo_transport_handle_t:256:0 qdpo_t:64:0 qdpo_config_t:64:0 qd_connector_config_t:64:0 qd_connector_t:64:0 qd_connection_t:32:0 qd_listener_t:64:0 qd_session_t:128:0 qd_pn_free_link_t:64:0 qd_link_ref_t:384:0 qd_link_t:320:0 qd_adaptor_listener_t:64:0 qd_tcp_connection_t:256:128 qd_tcp_connector_t:64:0 qd_tcp_listener_t:64:0 qd_adaptor_config_t:64:0 
2025-11-08 03:15:38.513973 +0000 FLOW_LOG (info) BIFLOW_TPORT [mnkbl:33] BEGIN END parent=mnkbl:4 sourceHost=10.129.6.234 sourcePort=57450 octets=5395 latency=25099 trace=0/isd-pl-c87b45ad51e0-skupper-router-84b667b8d4-mnkbl octetsReverse=4437 connector=c2cmf:132 processLatency=3303 proxyHost=172.17.35.43 proxyPort=39150 errorListenerSide=delivery-failed (destination unreachable) errorConnectorSide=proton:io (Broken pipe - async disconnect 172.17.19.116:9443)
2025-11-08 03:15:38.714022 +0000 FLOW_LOG (info) BIFLOW_TPORT [mnkbl:34] BEGIN END parent=mnkbl:4 sourceHost=10.129.6.234 sourcePort=57464 octets=5393 latency=26127 trace=0/isd-pl-c87b45ad51e0-skupper-router-84b667b8d4-mnkbl octetsReverse=4435 connector=c2cmf:134 processLatency=3498 proxyHost=172.17.35.43 proxyPort=36958 errorListenerSide=delivery-failed (destination unreachable) errorConnectorSide=proton:io (Broken pipe - async disconnect 172.17.61.158:9443)
2025-11-08 03:15:38.714074 +0000 FLOW_LOG (info) BIFLOW_TPORT [mnkbl:35] BEGIN END parent=mnkbl:4 sourceHost=10.129.6.234 sourcePort=53016 octets=5394 latency=25507 trace=0/isd-pl-c87b45ad51e0-skupper-router-84b667b8d4-mnkbl octetsReverse=4436 connector=c2cmf:132 processLatency=2978 proxyHost=172.17.35.43 proxyPort=44240
2025-11-08 03:20:38.603458 +0000 FLOW_LOG (info) BIFLOW_TPORT [mnkbl:36] BEGIN END parent=mnkbl:4 sourceHost=10.129.6.234 sourcePort=53018 octets=5394 latency=27581 trace=0/isd-pl-c87b45ad51e0-skupper-router-84b667b8d4-mnkbl octetsReverse=4436 connector=c2cmf:134 processLatency=3586 proxyHost=172.17.35.43 proxyPort=55436 errorListenerSide=delivery-failed (destination unreachable) errorConnectorSide=proton:io (Broken pipe - async disconnect 172.17.61.158:9443)
2025-11-08 03:20:38.603522 +0000 FLOW_LOG (info) BIFLOW_TPORT [mnkbl:37] BEGIN END parent=mnkbl:4 sourceHost=10.129.6.234 sourcePort=53020 octets=5394 latency=24363 trace=0/isd-pl-c87b45ad51e0-skupper-router-84b667b8d4-mnkbl octetsReverse=4436 connector=c2cmf:142 processLatency=2247 proxyHost=172.17.35.43 proxyPort=51322 errorListenerSide=delivery-failed (destination unreachable) errorConnectorSide=proton:io (Broken pipe - async disconnect 172.17.46.73:9443)
2025-11-08 03:20:38.803504 +0000 FLOW_LOG (info) BIFLOW_TPORT [mnkbl:38] BEGIN END parent=mnkbl:4 sourceHost=10.129.6.234 sourcePort=45952 octets=5395 latency=28513 trace=0/isd-pl-c87b45ad51e0-skupper-router-84b667b8d4-mnkbl octetsReverse=4435 connector=c2cmf:134 processLatency=3592 proxyHost=172.17.35.43 proxyPort=49208 errorListenerSide=delivery-failed (destination unreachable) errorConnectorSide=proton:io (Broken pipe - async disconnect 172.17.61.158:9443)

What this error describe ?

How To Reproduce
N/A

Expected behavior
N/A

Environment details

• Skupper CLI: 2.1.0
• Skupper Operator (if applicable): [e.g. 1.5.0, 1.4.3]
• Platform: OpenShift

Additional context
N/A