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[OLVM] RHEL V5.8 Guest Loosing Network Connection After a Few minutes (Doc ID 2762513.1)

Last updated on MARCH 22, 2021

Applies to:

Linux OS - Version Oracle Linux 7.9 and later
Information in this document applies to any platform.

Symptoms

Red Hat OLVM guests RHEL5.8 VM version: 2.6.18-308.el5 loosing internet connection after a few minutes
tcpdump tracing shows:

vm_eth0.pcap:
=============
09:28:01.998324 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 152, length 64
09:28:01.999521 IP XX.YYY.0.1 > XX.YYY.21.33: ICMP echo reply, id 23151, seq 152, length 64
09:28:02.997325 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 153, length 64
09:28:02.998568 IP XX.YYY.0.1 > XX.YYY.21.33: ICMP echo reply, id 23151, seq 153, length 64
09:28:03.996321 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 154, length 64
09:28:03.997500 IP XX.YYY.0.1 > XX.YYY.21.33: ICMP echo reply, id 23151, seq 154, length 64
09:28:04.997276 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 155, length 64
09:28:04.998473 IP XX.YYY.0.1 > XX.YYY.21.33: ICMP echo reply, id 23151, seq 155, length 64
09:28:05.999221 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 156, length 64 <<-- no longer replies
09:28:06.999247 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 157, length 64
09:28:07.999235 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 158, length 64
09:28:08.999219 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 159, length 64
09:28:09.999188 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 160, length 64
09:28:10.999152 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 161, length 64
09:28:11.999190 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 162, length 64
09:28:13.000141 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 163, length 64
09:28:14.000122 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 164, length 64
09:28:15.000141 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 165, length 64
09:28:16.000117 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 166, length 64

vnet0.pcap:
===========
10:39:10.602532 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 152, length 64
10:39:10.603601 IP XX.YYY.0.1 > XX.YYY.21.33: ICMP echo reply, id 23151, seq 152, length 64
10:39:11.601512 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 153, length 64
10:39:11.602585 IP XX.YYY.0.1 > XX.YYY.21.33: ICMP echo reply, id 23151, seq 153, length 64
10:39:12.600501 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 154, length 64
10:39:12.601587 IP XX.YYY.0.1 > XX.YYY.21.33: ICMP echo reply, id 23151, seq 154, length 64
10:39:13.601460 IP XX.YYY.21.33 > XX.YYY.0.1: ICMP echo request, id 23151, seq 155, length 64
10:39:13.602551 IP XX.YYY.0.1 > XX.YYY.21.33: ICMP echo reply, id 23151, seq 155, length 64 <<<<<<<<----------- no more entries

it looks like request seq 156 and later are not passing between the guest and the host

Cause

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In this Document
Symptoms
Cause
Solution


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