net.inet.esp.enable=1 # Enable the ESP IPsec protocol
net.inet.ah.enable=1 # Enable the AH IPsec protocol
net.inet.ip.forwarding=1 # Enable IP forwarding for the host.
net.inet.ipcomp.enable=1 # Optional: compress IP datagrams… 15 more words
This post is the summary based on a recent discussion in the kernelnewbies mail list. Thanks to the collective intelligence, the Linux kernel ARP behavior with multiple NIC is now pretty clear.153 more words