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List: packetfence-users
Subject: Re: [PacketFence-users] PacketFence 10.3.0 Cluster VRRP Flapping
From: "Brenek, Benjamin via PacketFence-users" <packetfence-users () lists ! sourceforge ! ne
Date: 2021-08-18 16:47:23
Message-ID: BN9PR14MB50491E62C72F1738B28D6E17DCFF9 () BN9PR14MB5049 ! namprd14 ! prod ! outlook ! com
[Download RAW message or body]
Answering my own question here in case anyone comes across this same issue.
It turns out that there was a second PacketFence cluster on the subnet, and the two \
clusters were using the same keepalived virtual_router_id, thus trying to join each \
other's clusters.
After changing one of the cluster's virtual_router_id the issue went away.
I'm not too sure what changed between 8.1.0 to 10.3.0 that caused this problem to \
start, but after implementing the above fix, the problem stopped.
Thank you,
Ben
<http://www.bayada.com/>
________________________________
From: Brenek, Benjamin via PacketFence-users \
<packetfence-users@lists.sourceforge.net>
Sent: Monday, August 16, 2021 12:31 PM
To: packetfence-users@lists.sourceforge.net <packetfence-users@lists.sourceforge.net>
Cc: Brenek, Benjamin <bbrenek@bayada.com>
Subject: [PacketFence-users] PacketFence 10.3.0 Cluster VRRP Flapping
CAUTION: This email originated from outside of BAYADA. Beware of links and \
attachments.
Hello All,
I recently upgraded a PacketFence cluster from 8.1.0 to 10.3.0. Since upgrading the \
cluster, the keepalived VIP has been flapping every few minutes between Backup and \
Master.
This was not happening prior to upgrading to 10.3.0 and has been happening ever since \
upgrading to 10.3.0. I've made sure that all maintenance patches are pulled via the \
maintenance script.
If I switch the node order around in cluster.conf, the problem follows the first node \
in the list. From what I can tell the cluster is still working as expected, but the \
VIP master keeps changing every few minutes. I've upgraded a few other clusters from \
8.1.0 to 10.3.0, and did not see this issue, which leads me to believe that it has \
something to do with this cluster.
Checking journalctl doesn't really show much, but it looks like something might be \
wrong with a config somewhere?:
Aug 16 12:24:20 packetfence01 httpd_aaa[15870]: 127.0.0.1 - radius_accounting \
[16/Aug/2021:12:24:20 -0400] "POST / HTTP/1.1" 200 219 1163 17231 "-" \
"Go-http-client/1.1" "127.0.0.1:7070"
Aug 16 12:24:20 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.148.11.19
Aug 16 12:24:21 packetfence01 httpd_portal[15936]: - - - [16/Aug/2021:12:24:21 -0400] \
"GET /captive-portal HTTP/1.0" 302 522 74 2775 "-" \
"HAPROXY-load-balancing-check"
Aug 16 12:24:22 packetfence01 httpd_portal[15936]: - - - [16/Aug/2021:12:24:22 -0400] \
"GET /captive-portal HTTP/1.0" 302 522 74 3015 "-" \
"HAPROXY-load-balancing-check"
Aug 16 12:24:23 packetfence01 Keepalived_vrrp[15063]: (10.248.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.248.11.19
Aug 16 12:24:23 packetfence01 httpd_portal[15937]: - - - [16/Aug/2021:12:24:23 -0400] \
"GET /captive-portal HTTP/1.0" 302 522 74 2809 "-" \
"HAPROXY-load-balancing-check"
Aug 16 12:24:25 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.148.11.19
Aug 16 12:24:28 packetfence01 Keepalived_vrrp[15063]: (10.248.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.248.11.19
Aug 16 12:24:30 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.148.11.19
Aug 16 12:24:31 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) Entering MASTER \
STATE
Aug 16 12:24:31 packetfence01 Keepalived_vrrp[15063]: Remote SMTP server \
[192.168.76.75]:25 connected.
Aug 16 12:24:31 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) Master received \
advert from 10.148.11.22 with higher priority 100, ours 99
Aug 16 12:24:31 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) Entering BACKUP \
STATE
Aug 16 12:24:31 packetfence01 Keepalived_vrrp[15063]: Remote SMTP server \
[192.168.76.75]:25 connected.
Aug 16 12:24:31 packetfence01 pfdhcplistener[15775]: pfdhcplistener(15775) WARN: \
[mac:[undef]] Use of uninitialized value $int in concatenation (.) or string at \
/usr/local/pf/lib/pf/cluster.pm line 415.
\
(pf::cluster::is_vip_running)
Aug 16 12:24:31 packetfence01 pfdhcplistener[15775]: pfdhcplistener(15775) WARN: \
[mac:[undef]] Use of uninitialized value $interface in concatenation (.) or string at \
/usr/local/pf/sbin/pfdhcplistener line 120.
\
(main::reload_config)
Aug 16 12:24:31 packetfence01 pfdhcplistener[15775]: Use of uninitialized value $int \
in concatenation (.) or string at /usr/local/pf/lib/pf/cluster.pm \
line 415.
Aug 16 12:24:31 packetfence01 pfdhcplistener[15775]: Use of uninitialized value \
$interface in concatenation (.) or string at /usr/local/pf/sbin/pfdhcplistener line \
120.
Aug 16 12:24:31 packetfence01 pfdhcplistener[15775]: pfdhcplistener(15775) INFO: \
[mac:[undef]] Reload configuration on (main::reload_config)
Aug 16 12:24:31 packetfence01 pfdhcplistener[15775]: pfdhcplistener(15775) WARN: \
[mac:[undef]] Use of uninitialized value $int in concatenation (.) or string at \
/usr/local/pf/lib/pf/cluster.pm line 415.
\
(pf::cluster::is_vip_running)
Aug 16 12:24:31 packetfence01 pfdhcplistener[15775]: pfdhcplistener(15775) WARN: \
[mac:[undef]] Use of uninitialized value $interface in concatenation (.) or string at \
/usr/local/pf/sbin/pfdhcplistener line 120.
\
(main::reload_config)
Aug 16 12:24:31 packetfence01 pfdhcplistener[15775]: Use of uninitialized value $int \
in concatenation (.) or string at /usr/local/pf/lib/pf/cluster.pm \
line 415.
Aug 16 12:24:31 packetfence01 pfdhcplistener[15775]: Use of uninitialized value \
$interface in concatenation (.) or string at /usr/local/pf/sbin/pfdhcplistener line \
120.
Aug 16 12:24:31 packetfence01 pfdhcplistener[15775]: pfdhcplistener(15775) INFO: \
[mac:[undef]] Reload configuration on (main::reload_config)
Aug 16 12:24:32 packetfence01 pfdhcplistener[15839]: pfdhcplistener(15839) INFO: \
[mac:[undef]] Reload configuration on eth0.832 (main::reload_config)
Aug 16 12:24:32 packetfence01 pfdhcplistener[15841]: pfdhcplistener(15841) INFO: \
[mac:[undef]] Reload configuration on eth0.11 (main::reload_config)
Aug 16 12:24:32 packetfence01 pfdhcplistener[15840]: pfdhcplistener(15840) INFO: \
[mac:[undef]] Reload configuration on eth0.932 (main::reload_config)
Aug 16 12:24:33 packetfence01 Keepalived_vrrp[15063]: (10.248.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.248.11.19
Aug 16 12:24:36 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.148.11.19
Aug 16 12:24:36 packetfence01 httpd_portal[15937]: - - - [16/Aug/2021:12:24:36 -0400] \
"GET /captive-portal HTTP/1.0" 302 522 74 4425 "-" \
"HAPROXY-load-balancing-check"
Aug 16 12:24:37 packetfence01 httpd_portal[15937]: - - - [16/Aug/2021:12:24:37 -0400] \
"GET /captive-portal HTTP/1.0" 302 522 74 2776 "-" \
"HAPROXY-load-balancing-check"
Aug 16 12:24:38 packetfence01 Keepalived_vrrp[15063]: (10.248.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.248.11.19
Aug 16 12:24:38 packetfence01 httpd_portal[15936]: - - - [16/Aug/2021:12:24:38 -0400] \
"GET /captive-portal HTTP/1.0" 302 522 74 3004 "-" \
"HAPROXY-load-balancing-check"
Aug 16 12:24:39 packetfence01 Keepalived_vrrp[15063]: SMTP alert successfully sent.
Aug 16 12:24:40 packetfence01 Keepalived_vrrp[15063]: SMTP alert successfully sent.
Aug 16 12:24:41 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.148.11.19
Aug 16 12:24:42 packetfence01 load_balancer[15920]: Adding client 192.168.8.12/32
Aug 16 12:24:43 packetfence01 Keepalived_vrrp[15063]: (10.248.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.248.11.19
Aug 16 12:24:46 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.148.11.19
Aug 16 12:24:48 packetfence01 Keepalived_vrrp[15063]: (10.248.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.248.11.19
Aug 16 12:24:51 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.148.11.19
Any help here would be greatly helpful.
Thank you,
Ben
<http://www.bayada.com/>
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<body dir="ltr">
<div style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; color: rgb(0, \
0, 0);"> Answering my own question here in case anyone comes across this same \
issue.</div> <div style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; \
color: rgb(0, 0, 0);"> <br>
</div>
<div style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; color: rgb(0, \
0, 0);"> It turns out that there was a second PacketFence cluster on the subnet, and \
the two clusters were using the same keepalived virtual_router_id, thus trying to \
join each other's clusters.</div> <div style="font-family: Arial, Helvetica, \
sans-serif; font-size: 10pt; color: rgb(0, 0, 0);"> <br>
</div>
<div style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; color: rgb(0, \
0, 0);"> After changing one of the cluster's virtual_router_id the issue went \
away.</div> <div style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; \
color: rgb(0, 0, 0);"> <br>
</div>
<div style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; color: rgb(0, \
0, 0);"> I'm not too sure what changed between 8.1.0 to 10.3.0 that caused this \
problem to start, but after implementing the above fix, the problem stopped.</div> \
<div> <div style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; color: \
rgb(0, 0, 0);"> <br>
</div>
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font-family:Calibri,sans-serif,serif,"EmojiFont"; margin:0px"> <span \
style="font-family:Arial,Helvetica,sans-serif; font-size:10pt">Ben</span></p> </div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" \
style="font-size:11pt" color="#000000"><b>From:</b> Brenek, Benjamin via \
PacketFence-users <packetfence-users@lists.sourceforge.net><br> <b>Sent:</b> \
Monday, August 16, 2021 12:31 PM<br> <b>To:</b> \
packetfence-users@lists.sourceforge.net \
<packetfence-users@lists.sourceforge.net><br> <b>Cc:</b> Brenek, Benjamin \
<bbrenek@bayada.com><br> <b>Subject:</b> [PacketFence-users] PacketFence 10.3.0 \
Cluster VRRP Flapping</font> <div> </div>
</div>
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<div class="x_MsoNormal" style="line-height:12.0pt; \
background:#FFEEBB"><b>CAUTION:</b><span style="font-size:10.0pt"> This email \
originated from outside of BAYADA. Beware of links and attachments.</div> <br>
</span>
<div>
<div style="font-family:Arial,Helvetica,sans-serif; font-size:10pt; \
color:rgb(0,0,0)"> Hello All,</div>
<div style="font-family:Arial,Helvetica,sans-serif; font-size:10pt; \
color:rgb(0,0,0)"> <br>
</div>
<div style="font-family:Arial,Helvetica,sans-serif; font-size:10pt; \
color:rgb(0,0,0)"> I recently upgraded a PacketFence cluster from 8.1.0 to 10.3.0. \
Since upgrading the cluster, the keepalived VIP has been flapping every few minutes \
between Backup and Master.</div> <div style="font-family:Arial,Helvetica,sans-serif; \
font-size:10pt; color:rgb(0,0,0)"> <br>
</div>
<div style="font-family:Arial,Helvetica,sans-serif; font-size:10pt; \
color:rgb(0,0,0)"> This was not happening prior to upgrading to 10.3.0 and has been \
happening ever since upgrading to 10.3.0. I've made sure that all maintenance patches \
are pulled via the maintenance script.</div> <div \
style="font-family:Arial,Helvetica,sans-serif; font-size:10pt; color:rgb(0,0,0)"> \
<br> </div>
<div style="font-family:Arial,Helvetica,sans-serif; font-size:10pt; \
color:rgb(0,0,0)"> If I switch the node order around in cluster.conf, the problem \
follows the first node in the list. From what I can tell the cluster is still working \
as expected, but the VIP master keeps changing every few minutes. I've upgraded a few \
other clusters from 8.1.0 to 10.3.0, and did not see this issue, which leads \
me to believe that it has something to do with this cluster.</div> <div \
style="font-family:Arial,Helvetica,sans-serif; font-size:10pt; color:rgb(0,0,0)"> \
<br> </div>
<div style="font-family:Arial,Helvetica,sans-serif; font-size:10pt; \
color:rgb(0,0,0)"> Checking journalctl doesn't really show much, but it looks like \
something might be wrong with a config somewhere?:</div> <div \
style="font-family:Arial,Helvetica,sans-serif; font-size:10pt; color:rgb(0,0,0)"> \
<br> </div>
<blockquote style="border-left:3px solid rgb(200,200,200); \
border-top-color:rgb(200,200,200); border-right-color:rgb(200,200,200); \
border-bottom-color:rgb(200,200,200); padding-left:1ex; margin-left:0.8ex; \
color:rgb(102,102,102)"> <div style="font-family:Arial,Helvetica,sans-serif; \
font-size:10pt; color:rgb(0,0,0)">
Aug 16 12:24:20 packetfence01 httpd_aaa[15870]: 127.0.0.1 - radius_accounting \
[16/Aug/2021:12:24:20 -0400] "POST / HTTP/1.1" 200 219 1163 17231 \
"-" "Go-http-client/1.1" "127.0.0.1:7070" <div>Aug 16 \
12:24:20 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) ip address associated \
with VRID 50 not present in MASTER advert : 10.148.11.19</div> <div>Aug 16 12:24:21 \
packetfence01 httpd_portal[15936]: - - - [16/Aug/2021:12:24:21 -0400] "GET \
/captive-portal HTTP/1.0" 302 522 74 2775 "-" \
"HAPROXY-load-balancing-check"</div> <div>Aug 16 12:24:22 packetfence01 \
httpd_portal[15936]: - - - [16/Aug/2021:12:24:22 -0400] "GET /captive-portal \
HTTP/1.0" 302 522 74 3015 "-" \
"HAPROXY-load-balancing-check"</div> <div>Aug 16 12:24:23 packetfence01 \
Keepalived_vrrp[15063]: (10.248.11.21) ip address associated with VRID 50 not present \
in MASTER advert : 10.248.11.19</div> <div>Aug 16 12:24:23 packetfence01 \
httpd_portal[15937]: - - - [16/Aug/2021:12:24:23 -0400] "GET /captive-portal \
HTTP/1.0" 302 522 74 2809 "-" \
"HAPROXY-load-balancing-check"</div> <div>Aug 16 12:24:25 packetfence01 \
Keepalived_vrrp[15063]: (10.148.11.21) ip address associated with VRID 50 not present \
in MASTER advert : 10.148.11.19</div> <div>Aug 16 12:24:28 packetfence01 \
Keepalived_vrrp[15063]: (10.248.11.21) ip address associated with VRID 50 not present \
in MASTER advert : 10.248.11.19</div> <div>Aug 16 12:24:30 packetfence01 \
Keepalived_vrrp[15063]: (10.148.11.21) ip address associated with VRID 50 not present \
in MASTER advert : 10.148.11.19</div> <div>Aug 16 12:24:31 packetfence01 \
Keepalived_vrrp[15063]: (10.148.11.21) <span style="background-color:rgb(255,255,0)"> \
Entering MASTER STATE</span></div> <div>Aug 16 12:24:31 packetfence01 \
Keepalived_vrrp[15063]: Remote SMTP server [192.168.76.75]:25 connected.</div> \
<div>Aug 16 12:24:31 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) <span \
style="background-color:rgb(255,255,0)"> Master received advert from 10.148.11.22 \
with higher priority 100, ours 99</span></div> <div>Aug 16 12:24:31 packetfence01 \
Keepalived_vrrp[15063]: (10.148.11.21) <span style="background-color:rgb(255,255,0)"> \
Entering BACKUP STATE</span></div> <div>Aug 16 12:24:31 packetfence01 \
Keepalived_vrrp[15063]: Remote SMTP server [192.168.76.75]:25 connected.</div> \
<div>Aug 16 12:24:31 packetfence01 pfdhcplistener[15775]: pfdhcplistener(15775) WARN: \
[mac:[undef]] Use of uninitialized value $int in concatenation (.) or string at \
/usr/local/pf/lib/pf/cluster.pm line 415.</div> <div> \
\
\
\
(pf::cluster::is_vip_running)</div> <div>Aug 16 12:24:31 packetfence01 \
pfdhcplistener[15775]: pfdhcplistener(15775) WARN: [mac:[undef]] Use of uninitialized \
value $interface in concatenation (.) or string at /usr/local/pf/sbin/pfdhcplistener \
line 120.</div> <div> \
\
\
(main::reload_config)</div> <div>Aug 16 12:24:31 packetfence01 \
pfdhcplistener[15775]: Use of uninitialized value $int in concatenation (.) or string \
at /usr/local/pf/lib/pf/cluster.pm line 415.</div> <div>Aug 16 12:24:31 packetfence01 \
pfdhcplistener[15775]: Use of uninitialized value $interface in concatenation (.) or \
string at /usr/local/pf/sbin/pfdhcplistener line 120.</div> <div>Aug 16 12:24:31 \
packetfence01 pfdhcplistener[15775]: pfdhcplistener(15775) INFO: [mac:[undef]] Reload \
configuration on (main::reload_config)</div> <div>Aug 16 12:24:31 packetfence01 \
pfdhcplistener[15775]: pfdhcplistener(15775) WARN: [mac:[undef]] Use of uninitialized \
value $int in concatenation (.) or string at /usr/local/pf/lib/pf/cluster.pm line \
415.</div> <div> \
\
\
(pf::cluster::is_vip_running)</div> <div>Aug 16 12:24:31 packetfence01 \
pfdhcplistener[15775]: pfdhcplistener(15775) WARN: [mac:[undef]] Use of uninitialized \
value $interface in concatenation (.) or string at /usr/local/pf/sbin/pfdhcplistener \
line 120.</div> <div> \
\
\
(main::reload_config)</div> <div>Aug 16 12:24:31 packetfence01 \
pfdhcplistener[15775]: Use of uninitialized value $int in concatenation (.) or string \
at /usr/local/pf/lib/pf/cluster.pm line 415.</div> <div>Aug 16 12:24:31 packetfence01 \
pfdhcplistener[15775]: Use of uninitialized value $interface in concatenation (.) or \
string at /usr/local/pf/sbin/pfdhcplistener line 120.</div> <div>Aug 16 12:24:31 \
packetfence01 pfdhcplistener[15775]: pfdhcplistener(15775) INFO: [mac:[undef]] Reload \
configuration on (main::reload_config)</div> <div>Aug 16 12:24:32 packetfence01 \
pfdhcplistener[15839]: pfdhcplistener(15839) INFO: [mac:[undef]] Reload configuration \
on eth0.832 (main::reload_config)</div> <div>Aug 16 12:24:32 packetfence01 \
pfdhcplistener[15841]: pfdhcplistener(15841) INFO: [mac:[undef]] Reload configuration \
on eth0.11 (main::reload_config)</div> <div>Aug 16 12:24:32 packetfence01 \
pfdhcplistener[15840]: pfdhcplistener(15840) INFO: [mac:[undef]] Reload configuration \
on eth0.932 (main::reload_config)</div> <div>Aug 16 12:24:33 packetfence01 \
Keepalived_vrrp[15063]: (10.248.11.21) ip address associated with VRID 50 not present \
in MASTER advert : 10.248.11.19</div> <div>Aug 16 12:24:36 packetfence01 \
Keepalived_vrrp[15063]: (10.148.11.21) ip address associated with VRID 50 not present \
in MASTER advert : 10.148.11.19</div> <div>Aug 16 12:24:36 packetfence01 \
httpd_portal[15937]: - - - [16/Aug/2021:12:24:36 -0400] "GET /captive-portal \
HTTP/1.0" 302 522 74 4425 "-" \
"HAPROXY-load-balancing-check"</div> <div>Aug 16 12:24:37 packetfence01 \
httpd_portal[15937]: - - - [16/Aug/2021:12:24:37 -0400] "GET /captive-portal \
HTTP/1.0" 302 522 74 2776 "-" \
"HAPROXY-load-balancing-check"</div> <div>Aug 16 12:24:38 packetfence01 \
Keepalived_vrrp[15063]: (10.248.11.21) ip address associated with VRID 50 not present \
in MASTER advert : 10.248.11.19</div> <div>Aug 16 12:24:38 packetfence01 \
httpd_portal[15936]: - - - [16/Aug/2021:12:24:38 -0400] "GET /captive-portal \
HTTP/1.0" 302 522 74 3004 "-" \
"HAPROXY-load-balancing-check"</div> <div>Aug 16 12:24:39 packetfence01 \
Keepalived_vrrp[15063]: SMTP alert successfully sent.</div> <div>Aug 16 12:24:40 \
packetfence01 Keepalived_vrrp[15063]: SMTP alert successfully sent.</div> <div>Aug 16 \
12:24:41 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) ip address associated \
with VRID 50 not present in MASTER advert : 10.148.11.19</div> <div>Aug 16 12:24:42 \
packetfence01 load_balancer[15920]: Adding client 192.168.8.12/32</div> <div>Aug 16 \
12:24:43 packetfence01 Keepalived_vrrp[15063]: (10.248.11.21) ip address associated \
with VRID 50 not present in MASTER advert : 10.248.11.19</div> <div>Aug 16 12:24:46 \
packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) ip address associated with VRID \
50 not present in MASTER advert : 10.148.11.19</div> <div>Aug 16 12:24:48 \
packetfence01 Keepalived_vrrp[15063]: (10.248.11.21) ip address associated with VRID \
50 not present in MASTER advert : 10.248.11.19</div>
Aug 16 12:24:51 packetfence01 Keepalived_vrrp[15063]: (10.148.11.21) ip address \
associated with VRID 50 not present in MASTER advert : 10.148.11.19<br> </div>
</blockquote>
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<div style="font-family:Arial,Helvetica,sans-serif; font-size:10pt; \
color:rgb(0,0,0)"> Any help here would be greatly helpful.</div>
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