proxy_arp_pvlan feature request

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proxy_arp_pvlan feature request

L1 Bithead

Dear Palo Alto support team


As I have post my question in the community, I come to conclusion that the Palo Alto firewall does not support the feature explained in the post--

The design case is used the the private vlan scenario where the upstream router/firewall with promiscuous port should reply to the isolated vlan clients in order to inspect the traffic between the isolated VLANs.


In the Linux kernel, this feature is called the proxy_arp_pvlan which is disabled by default. The path to enable this feature is under the /proc/sys/net/ipv4/conf/all/proxy_arp_pvlan


In other vendor terms, it is supported with the following name:

  • Cisco == ARP alias
  • Fortinet == Proxy-ARP
  • Juniper SRX == proxy arp unrestricted
  • Mikrotik == local-proxy-arp

As  the Palo Alto firewall is one the best firewall in the industry, I hope that it supports this feature.


Any feedback is much appreciated.




L1 Bithead

L1 Bithead


L5 Sessionator

Would you contact the community in the PA products section? Maybe you will get answers in there.


This forum is focused on the usage and questions related to Expedition tool.



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