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From: Rasmus Fauske <rfauske@gmail.com>
Reply-To: Rasmus Fauske <rfauske@gmail.com>
To: FreeBSD-gnats-submit@freebsd.org
Cc:
Subject: carp does not detect member when using vlan
X-Send-Pr-Version: 3.114
X-GNATS-Notify:

>Number:         184419
>Category:       kern
>Synopsis:       [carp] [vlan] carp does not detect member when using vlan
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    glebius
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Dec 01 19:40:00 UTC 2013
>Closed-Date:    
>Last-Modified:  Sun May 04 05:13:59 UTC 2014
>Originator:     Rasmus Fauske
>Release:        FreeBSD 10.0-BETA3 amd64
>Organization:
Rasmus Fauske
>Environment:
System: FreeBSD fw1.securedomainservice.net 10.0-BETA3 FreeBSD 10.0-BETA3 #0 r257580: Sun Nov 3 19:43:01 UTC 2013 root@snap.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64


>Description:
When I configure a sub interface with carp maually on two firewalls on a vlan both stays as master.

This results in an ip conflict in the network since both are active.

config fw1:
ifconfig lan0.10 create
ifconfig lan0.10 inet 10.50.189.254 netmask 255.255.255.0 vhid 12 pass iepheu5ZiafaM8Ba advbase 1 advskew 0 up

config fw2:
ifconfig lan0.10 create
ifconfig lan0.10 inet 10.50.189.254 netmask 255.255.255.0 vhid 12 pass iepheu5ZiafaM8Ba advbase 1 advskew 10 up

ifconfig fw1:
lan0.10: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=103<RXCSUM,TXCSUM,TSO4>
        ether 00:25:90:97:98:53
        inet6 fe80::225:90ff:fe97:9853%lan0.10 prefixlen 64 scopeid 0x8 
        inet 10.50.189.254 netmask 0xffffff00 broadcast 10.50.189.255 vhid 12 
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
        vlan: 10 parent interface: lan0
        carp: MASTER vhid 12 advbase 1 advskew 0

ifconfig fw2:
lan0.10: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=103<RXCSUM,TXCSUM,TSO4>
        ether 00:25:90:97:98:9f
        inet6 fe80::225:90ff:fe97:989f%lan0.10 prefixlen 64 scopeid 0x8 
        inet 10.50.189.254 netmask 0xffffff00 broadcast 10.50.189.255 vhid 12 
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
        vlan: 10 parent interface: lan0
        carp: MASTER vhid 12 advbase 1 advskew 10

>How-To-Repeat:

 Configure carp on vlan interface as noted in the description

>Fix:


>Release-Note:
>Audit-Trail:

From: Rasmus Fauske <rfauske@gmail.com>
To: bug-followup@FreeBSD.org, rfauske@gmail.com
Cc:  
Subject: Re: kern/184419: carp does not detect member when using vlan
Date: Mon, 2 Dec 2013 10:46:44 +0100

 Tried again but this time I first added two other ips from the same
 subnet and now it works:
 
 [admin@fw1 ~]$ ifconfig lan0.10
 lan0.10: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST>
 metric 0 mtu 1500
         options=103<RXCSUM,TXCSUM,TSO4>
         ether 00:25:90:97:98:53
         inet 10.50.189.252 netmask 0xffffff00 broadcast 10.50.189.255
         inet6 fe80::225:90ff:fe97:9853%lan0.10 prefixlen 64 scopeid 0x8
         inet 10.50.189.254 netmask 0xffffffff broadcast 10.50.189.254 vhid 12
         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
         media: Ethernet autoselect (1000baseT <full-duplex>)
         status: active
         vlan: 10 parent interface: lan0
         carp: MASTER vhid 12 advbase 1 advskew 0
 
 [admin@fw2 ~]$ ifconfig lan0.10
 lan0.10: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST>
 metric 0 mtu 1500
         options=103<RXCSUM,TXCSUM,TSO4>
         ether 00:25:90:97:98:9f
         inet 10.50.189.253 netmask 0xffffff00 broadcast 10.50.189.255
         inet6 fe80::225:90ff:fe97:989f%lan0.10 prefixlen 64 scopeid 0x8
         inet 10.50.189.254 netmask 0xffffffff broadcast 10.50.189.254 vhid 12
         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
         media: Ethernet autoselect (1000baseT <full-duplex>)
         status: active
         vlan: 10 parent interface: lan0
         carp: BACKUP vhid 12 advbase 1 advskew 10
 
 
 But was it not one of the new things in the carp rewrite that this
 should not be needed any more ?
Responsible-Changed-From-To: freebsd-bugs->glebius 
Responsible-Changed-By: glebius 
Responsible-Changed-When: Wed Dec 25 01:28:36 UTC 2013 
Responsible-Changed-Why:  
Mine. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=184419 

From: Gleb Smirnoff <glebius@FreeBSD.org>
To: Rasmus Fauske <rfauske@gmail.com>
Cc: FreeBSD-gnats-submit@freebsd.org
Subject: Re: kern/184419: carp does not detect member when using vlan
Date: Wed, 25 Dec 2013 05:28:29 +0400

   Rasmus,
 
 On Sun, Dec 01, 2013 at 08:32:04PM +0100, Rasmus Fauske wrote:
 R> ifconfig fw1:
 R> lan0.10: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
 R>         options=103<RXCSUM,TXCSUM,TSO4>
 R>         ether 00:25:90:97:98:53
 R>         inet6 fe80::225:90ff:fe97:9853%lan0.10 prefixlen 64 scopeid 0x8 
 R>         inet 10.50.189.254 netmask 0xffffff00 broadcast 10.50.189.255 vhid 12 
 R>         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
 R>         media: Ethernet autoselect (1000baseT <full-duplex>)
 R>         status: active
 R>         vlan: 10 parent interface: lan0
 R>         carp: MASTER vhid 12 advbase 1 advskew 0
 R> 
 R> ifconfig fw2:
 R> lan0.10: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
 R>         options=103<RXCSUM,TXCSUM,TSO4>
 R>         ether 00:25:90:97:98:9f
 R>         inet6 fe80::225:90ff:fe97:989f%lan0.10 prefixlen 64 scopeid 0x8 
 R>         inet 10.50.189.254 netmask 0xffffff00 broadcast 10.50.189.255 vhid 12 
 R>         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
 R>         media: Ethernet autoselect (1000baseT <full-duplex>)
 R>         status: active
 R>         vlan: 10 parent interface: lan0
 R>         carp: MASTER vhid 12 advbase 1 advskew 10
 
 Can you please debug it? Do both MASTERs send advertisements? Do they
 receive them?
 
 Can you check this with 'tcpdump -T carp vrrp' and 'netstat -sp carp'.
 
 -- 
 Totus tuus, Glebius.

From: Rasmus Fauske <rfauske@gmail.com>
To: bug-followup@FreeBSD.org, rfauske@gmail.com
Cc:  
Subject: Re: kern/184419: carp does not detect member when using vlan
Date: Wed, 1 Jan 2014 19:52:40 +0100

 From fw2:
 [root@fw2 /home/admin]# tcpdump -i lan0.10 -T carp vrrp
 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
 listening on lan0.10, link-type EN10MB (Ethernet), capture size 65535 bytes
 19:48:29.271715 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=0 authlen=7 counter=8757609652375954252
 19:48:29.856428 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=10 authlen=7
 counter=11953633564252915822
 19:48:30.295878 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=0 authlen=7 counter=14550229101204726876
 19:48:30.901434 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=10 authlen=7 counter=3373810037235981878
 19:48:31.315277 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=0 authlen=7 counter=1218492195925034529
 19:48:31.945432 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=10 authlen=7 counter=7679560679733874768
 19:48:32.335446 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=0 authlen=7 counter=16972966308398210500
 19:48:32.989438 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=10 authlen=7
 counter=10420133044209510997
 19:48:33.346436 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=0 authlen=7 counter=8402937777875352800
 
 [root@fw2 /home/admin]# netstat -sp carp
 carp:
         0 packets received (IPv4)
         0 packets received (IPv6)
                 0 packets discarded for wrong TTL
                 0 packets shorter than header
                 0 discarded for bad checksums
                 0 discarded packets with a bad version
                 0 discarded because packet too short
                 0 discarded for bad authentication
                 0 discarded for bad vhid
                 0 discarded because of a bad address list
         214 packets sent (IPv4)
         0 packets sent (IPv6)
                 0 send failed due to mbuf memory error
 
 and fw1:
 [root@fw1 /home/admin]# tcpdump -i lan0.10 -T carp vrrp
 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
 listening on lan0.10, link-type EN10MB (Ethernet), capture size 65535 bytes
 19:47:25.715515 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=10 authlen=7
 counter=17885688815578327427
 19:47:26.001470 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=0 authlen=7 counter=10770863618266470631
 19:47:26.776969 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=10 authlen=7
 counter=16381579893336147460
 19:47:27.044308 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=0 authlen=7 counter=1451374842126242461
 19:47:27.820990 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=10 authlen=7
 counter=15414053580808366426
 19:47:28.082476 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=0 authlen=7 counter=8526864321170672142
 19:47:28.869193 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=10 authlen=7 counter=1280075450752199034
 19:47:29.099566 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=0 authlen=7 counter=9195295151781835955
 19:47:29.927988 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=10 authlen=7
 counter=14519735789417812414
 19:47:30.100541 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=0 authlen=7 counter=17966836460108490046
 19:47:30.979557 IP 10.50.189.254 > vrrp.mcast.net: CARPv2-advertise
 36: vhid=12 advbase=1 advskew=10 authlen=7 counter=2008750939380676099
 
 [root@fw1 /home/admin]# netstat -sp carp
 carp:
         0 packets received (IPv4)
         0 packets received (IPv6)
                 0 packets discarded for wrong TTL
                 0 packets shorter than header
                 0 discarded for bad checksums
                 0 discarded packets with a bad version
                 0 discarded because packet too short
                 0 discarded for bad authentication
                 0 discarded for bad vhid
                 0 discarded because of a bad address list
         210 packets sent (IPv4)
         0 packets sent (IPv6)
                 0 send failed due to mbuf memory error
 
 
 So it looks like both are sending but not recv. If I set a random ipv4
 address in the same subnet on both nodes without carp and then add
 carp as the alias it works.

From: Rasmus Fauske <rfauske@gmail.com>
To: bug-followup@FreeBSD.org, rfauske@gmail.com
Cc:  
Subject: Re: kern/184419: carp does not detect member when using vlan
Date: Fri, 3 Jan 2014 12:37:50 +0100

 This is the board:
 http://www.supermicro.com/products/motherboard/Xeon/QM77/X9SPV-LN4F-3QE.cfm
 
 Intel=AE 82574L Gigabit Ethernet controllers
 Supports 10BASE-T, 100BASE-TX, and 1000BASE-T, RJ45 output
 
 Detected as em interfaces.
 em0: <Intel(R) PRO/1000 Network Connection 7.3.8> port 0xe000-0xe01f
 mem 0xf7c00000-0xf7c1ffff,0xf7c20000-0xf7c23fff irq 16 at device 0.0
 on pci1
 em0: Using MSIX interrupts with 3 vectors
 em0: Ethernet address: 00:25:90:97:98:50
 em1: <Intel(R) PRO/1000 Network Connection 7.3.8> port 0xd000-0xd01f
 mem 0xf7b00000-0xf7b1ffff,0xf7b20000-0xf7b23fff irq 17 at device 0.0
 on pci2
 em1: Using MSIX interrupts with 3 vectors
 em1: Ethernet address: 00:25:90:97:98:51
 em2: <Intel(R) PRO/1000 Network Connection 7.3.8> port 0xc000-0xc01f
 mem 0xf7a00000-0xf7a1ffff,0xf7a20000-0xf7a23fff irq 18 at device 0.0
 on pci3
 em2: Using MSIX interrupts with 3 vectors
 em2: Ethernet address: 00:25:90:97:98:52
 em3: <Intel(R) PRO/1000 Network Connection 7.3.8> port 0xb000-0xb01f
 mem 0xf7900000-0xf791ffff,0xf7920000-0xf7923fff irq 19 at device 0.0
 on pci4
 em3: Using MSIX interrupts with 3 vectors
 em3: Ethernet address: 00:25:90:97:98:53
 
 Both connected to hp switches on trunk ports

From: Gleb Smirnoff <glebius@FreeBSD.org>
To: Rasmus Fauske <rfauske@gmail.com>
Cc: bug-followup@FreeBSD.org
Subject: Re: kern/184419: carp does not detect member when using vlan
Date: Fri, 3 Jan 2014 15:32:59 +0400

   Rasmus,
 
   I failed to reproduce the problem between VM host running vmnet0.10
 with single IP/single VHID and VM guest on same machine running
 vtnet0.10 with single IP/single VHID.
 
   Thus, I think, the issue is related to the NIC driver you are
 running. What actual hardware and driver hides behind "lan0" interface?
 
 -- 
 Totus tuus, Glebius.

From: Gleb Smirnoff <glebius@FreeBSD.org>
To: Rasmus Fauske <rfauske@gmail.com>
Cc: bug-followup@FreeBSD.org
Subject: Re: kern/184419: carp does not detect member when using vlan
Date: Fri, 3 Jan 2014 16:09:40 +0400

   Rasmus,
 
   can you please show output of same tcpdump command, but with '-e'
 additional switch?
 
 -- 
 Totus tuus, Glebius.

From: Rasmus Fauske <rfauske@gmail.com>
To: bug-followup@FreeBSD.org, rfauske@gmail.com
Cc:  
Subject: Re: kern/184419: carp does not detect member when using vlan
Date: Fri, 3 Jan 2014 21:14:54 +0100

 [root@fw2 /home/admin]# tcpdump -e -i lan0.10 -T carp vrrp
 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
 listening on lan0.10, link-type EN10MB (Ethernet), capture size 65535 bytes
 21:13:55.056254 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=10
 authlen=7 counter=4763982299812851922
 21:13:55.310524 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=0
 authlen=7 counter=2087229128953056498
 21:13:56.097232 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=10
 authlen=7 counter=6934153224608408688
 21:13:56.324768 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=0
 authlen=7 counter=13490932512949876205
 21:13:57.173244 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=10
 authlen=7 counter=8607531090608267045
 21:13:57.351572 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=0
 authlen=7 counter=15705826237679668820
 21:13:58.217267 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=10
 authlen=7 counter=16617702361238842174
 21:13:58.354445 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=0
 authlen=7 counter=3877848167602175039
 21:13:59.265604 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=10
 authlen=7 counter=4167490115694451747
 21:13:59.355003 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=0
 authlen=7 counter=15182353317462913702
 
 
 [root@fw1 /home/admin]# tcpdump -e -i lan0.10 -T carp vrrp
 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
 listening on lan0.10, link-type EN10MB (Ethernet), capture size 65535 bytes
 21:12:34.308348 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=0
 authlen=7 counter=5141196527039314977
 21:12:35.015122 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=10
 authlen=7 counter=12517928482985700351
 21:12:35.337232 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=0
 authlen=7 counter=6290574079592808905
 21:12:36.067115 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=10
 authlen=7 counter=8594578498695581883
 21:12:36.378608 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=0
 authlen=7 counter=2774494840302332100
 21:12:37.126991 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=10
 authlen=7 counter=4763982299812851922
 21:12:37.381130 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=0
 authlen=7 counter=2087229128953056498
 21:12:38.167906 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=10
 authlen=7 counter=6934153224608408688
 21:12:38.395345 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=0
 authlen=7 counter=13490932512949876205
 21:12:39.243917 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=10
 authlen=7 counter=8607531090608267045
 21:12:39.422066 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=0
 authlen=7 counter=15705826237679668820
 21:12:40.287945 00:00:5e:00:01:0c (oui Unknown) > 01:00:5e:00:00:12
 (oui Unknown), ethertype IPv4 (0x0800), length 70: 10.50.189.254 >
 vrrp.mcast.net: CARPv2-advertise 36: vhid=12 advbase=1 advskew=10
 authlen=7 counter=16617702361238842174
>Unformatted:
