fix: update comments for dual NIC support and clarify ARP proxy function

Author: mugeshsp

cni/network/network_linux.go

@@ -125,7 +125,7 @@ func getNATInfo(_ *cni.NetworkConfig, _ interface{}, _ bool) (natInfo []policy.N
 
 func platformInit(cniConfig *cni.NetworkConfig) {}
 
-// isDualNicFeatureSupported returns if the dual nic feature is supported. Currently it's only supported for windows hnsv2 path
+// isDualNicFeatureSupported returns true as the dual nic feature is supported on Linux.
 func (plugin *NetPlugin) isDualNicFeatureSupported(netNs string) bool {
 	return true
 }

network/transparent_vlan_endpointclient_linux.go

@@ -399,7 +399,7 @@ func (client *TransparentVlanEndpointClient) PopulateVnet(epInfo *EndpointInfo)
 	return nil
 }
 
-// Set ARP proxy on the vlan interface to respond to ARP requests for the gateway IP
+// Set ARP proxy on the specified interface to respond to ARP requests for the gateway IP
 func (client *TransparentVlanEndpointClient) setArpProxy(ifName string) error {
 	cmd := fmt.Sprintf("echo 1 > /proc/sys/net/ipv4/conf/%v/proxy_arp", ifName)
 	_, err := client.plClient.ExecuteRawCommand(cmd)