* Search for macvlan interfaces with the appropriate name and MAC
address when starting up a new VRRP instance
* Split VRRP socket into two; one for Tx, one for Rx
* Bind Tx socket to the macvlan subinterface so our VRRP advertisements
go out with the correct MAC address
* Send ARP requests from this macvlan subinterface
* Improve error messaging
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
* Validate IPvX headers and packet contents
* Remove filter of non-255 TTL IPv4 packets; better to receive, log and
drop them ourselves
* Set outgoing packet TTL / hop limit to 255
* Use existing sockopt functions
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
* Properly encode VRRP packets
* Calculate checksum appropriately
* Update signature to provide caller both packet and result length
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
