Strange Problem: DHCP Failover after upgrade to 2.5.0 - XMLRPC BUG?

[charly65]

Hello,

I've configured two pfSense boxes as Master/Slave.
There are multiple LAN Interfaces with DHCP configured on each of them.
There's one OpenVPN-Client connected to a some server on the internet.

Whenever DHCP-Settings are synced (XMLRPC) to the Slave (e.g. by adding/changing a NTP-Server in the DHCP-Settings), the failover_peerip on the Slave is changed from the Master_ip to the OpenVPN-Client-IP (!!!) on all DHCP-Servers on all LAN-Interfaces, which of course causes DHCP Master/Slave communication to fail.

When I manually correct the failover_peerips on the Slave, everything works normally until the next sync happens. Excluding DHCP from HA-sync does help.

Interesting finding: When I disable the OpenVPN-Client, the failover_peerips stay untouched.

This clearly must be a bug in XMLRPC-Sync somehow ...

[viktor_g]

This post is deleted!

[viktor_g]

@charly65
What is your DHCP interface? LAN?
could you show the netstat -n and ifconfig output?

[jimp]

Sounds like the order of assigned interfaces doesn't match on both systems when it must match exactly.

[charly65]

@viktor_g said in Strange Problem: DHCP Failover after upgrade to 2.5.0 - XMLRPC BUG?:

@charly65
What is your DHCP interface? LAN?

All LAN-Interfaces run DHCP ...

Here's the Console-Overview:

could you show the netstat -n and ifconfig output?

netstat -n ? sure? I can't think of any reason why, but I'l add it. I'll add -rn, too.
Since there's quite a lot of interfaces, I've put the content in files ...

Master is fw2 (.2), Slave is fw3 (.3)

Again: when I disable OpenVPN, everything's fine, XMLRPC-sync changes the slave-ip in the
failover_peerip field (on Master) to the master-ip in failover_peerip field on Slave.
With OpenVPN active, ALL Slaves failover_peerip fields end up showing the XXX.YYY.255.33, which happens to be the OpenVPN Client IP.

fw2-ifconfig.txt fw2-netstat-n.txt fw2-netstat-rn.txt fw3-ifconfig.txt fw3-netstat-n.txt fw3-netstat-rn.txt

[viktor_g]

ok, I can reproduce it
Please try this patch: 151.diff

Redmine issue created: https://redmine.pfsense.org/issues/11519

[charly65]

@viktor_g said in Strange Problem: DHCP Failover after upgrade to 2.5.0 - XMLRPC BUG?:

ok, I can reproduce it
Please try this patch: 151.diff

Perfect! This does the job! Thanks a lot, Viktor!