Community discussions

MikroTik App
 
nmazzoletti
just joined
Topic Author
Posts: 8
Joined: Sat May 29, 2021 5:24 pm

VRRP NFCT_SLAVE bind failed (98) Address in use

Sat Jun 04, 2022 1:42 pm

Hi everyone,
I have a problem that I could find a way to solve..
Here is my situation, I have 2 CCR2004-1G-12S+2XS with RouterOS 7.2.3 acting as gateways for different VLANs using VRRP.
I have noticed using /system/logging on VRRP that there is an error on every VRRP interface that I have enabled, both the master and the slave have the problem:
master: vrrp,warning NFCT_MASTER: UDP bind failed (98) - Address in use
slave:  vrrp,warning NFCT_SLAVE bind failed (98) Address in use

Here is my VRRP configuration for both routers:
add interface=VLAN10 name=VRRP10 preemption-mode=no sync-connection-tracking=yes vrid=10
add interface=VLAN20 name=VRRP20 preemption-mode=no sync-connection-tracking=yes vrid=20
add interface=VLAN30 name=VRRP30 preemption-mode=no sync-connection-tracking=yes vrid=30
add interface=VLAN98 name=VRRP98 preemption-mode=no sync-connection-tracking=yes vrid=98

add address=172.16.10.250/24 interface=VLAN10 network=172.16.10.0
add address=172.16.20.250/24 interface=VLAN20 network=172.16.20.0
add address=172.16.30.250/24 interface=VLAN30 network=172.16.30.0
add address=172.16.98.250/24 interface=VLAN98 network=172.16.98.0
add address=172.16.10.1 interface=VRRP10 network=172.16.10.0
add address=172.16.20.1 interface=VRRP20 network=172.16.20.0
add address=172.16.30.1 interface=VRRP30 network=172.16.30.1
add address=172.16.98.1 interface=VRRP98 network=172.16.98.1

IP configuration is replicated on second router with different IPs on VLAN interfaces.

If I need to provide other information let me know.

Any hint to find a solution are welcomed, thanks for your time, have a great day.
 
nmazzoletti
just joined
Topic Author
Posts: 8
Joined: Sat May 29, 2021 5:24 pm

Re: VRRP NFCT_SLAVE bind failed (98) Address in use  [SOLVED]

Sun Jul 17, 2022 8:13 pm

Thanks to the support, I resolved my issue, which was caused by the fact the all interfaces had sync-connection-tracking=yes.
This option should only be configured in one VRRP interface at time.
 
User avatar
spippan
Member
Member
Posts: 333
Joined: Wed Nov 12, 2014 1:00 pm
Location: Austria

Re: VRRP NFCT_SLAVE bind failed (98) Address in use

Sun Jan 15, 2023 9:03 pm

Thanks to the support, I resolved my issue, which was caused by the fact the all interfaces had sync-connection-tracking=yes.
This option should only be configured in one VRRP interface at time.
hi
so you mean, sync-conntrack has to be enabled only on one router and not the second one in the VRRP setup?

so for every VRRP interface on router A sync-conntrack=yes and for every VRRP interface on router B sync-conntrack=no?
 
nmazzoletti
just joined
Topic Author
Posts: 8
Joined: Sat May 29, 2021 5:24 pm

Re: VRRP NFCT_SLAVE bind failed (98) Address in use

Tue Jan 17, 2023 10:35 am

hi
so you mean, sync-conntrack has to be enabled only on one router and not the second one in the VRRP setup?

so for every VRRP interface on router A sync-conntrack=yes and for every VRRP interface on router B sync-conntrack=no?
If you are grouping the different VRRP interfaces together (using group-master command), you only need to set the sync on the Backup Router's group master interface.
Else, I believe that you have to do on all the backup router's VRRP interfaces (Not tested on my side).
 
User avatar
spippan
Member
Member
Posts: 333
Joined: Wed Nov 12, 2014 1:00 pm
Location: Austria

Re: VRRP NFCT_SLAVE bind failed (98) Address in use

Mon Jan 30, 2023 8:32 am



If you are grouping the different VRRP interfaces together (using group-master command), you only need to set the sync on the Backup Router's group master interface.
Else, I believe that you have to do on all the backup router's VRRP interfaces (Not tested on my side).
thank you, i will have a look into that.

Who is online

Users browsing this forum: CJWW, EmuAGR, GoogleOther [Bot], NetHorror and 76 guests