Issue With adding Secondary IPs to Azure VM
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Issue With adding Secondary IPs to Azure VM

L2 Linker

Recently, we've been having an issue with assigning secondary IPs to our Azure PA VMs where if we add a new IP, it doesn't seem to apply until we add a second IP. After the 2nd IP is added, the first starts working but the 2nd doesn't work. The Palo interfaces are set to DHCP and IPs are assigned to the Azure NIC.

 

Same issue on 3 firewalls in different regions running PAN-OS 9.1.7/8.

 

Just wondering if anyone else has seen this issue? Also, unsure if it's an Azure or PAN issue.

1 REPLY 1

L4 Transporter

Hello @Ash2k 

Change the IP assignment in Azure to static (for all fw IPs).

Configure the primary IP on the firewall with the correct network mask (e.g. /24). Configure all further IPs on the same NIC with /32

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