feat: enhance DHCP server logging for UDP communications

Adds detailed logging for incoming and outgoing DHCP packets (Discover, Offer, Request, Ack) to help diagnose IP assignment issues.

- Logs the full packet content at INFO level.
- Includes IPPool reference in log messages for better context.

Author: google-labs-jules[bot]

pkg/dhcp/dhcp.go

@@ -236,7 +236,8 @@ func (a *DHCPAllocator) dhcpHandlerPerPool(conn net.PacketConn, peer net.Addr, m
 		return
 	}
 
-	logrus.Tracef("(dhcp.dhcpHandlerPerPool) INCOMING PACKET=%s on IPPool: %s", m.Summary(), ipPoolRef)
+	// Enhanced logging for incoming packet
+	logrus.Infof("(dhcp.dhcpHandlerPerPool) INCOMING DHCP PACKET on IPPool %s: %s", ipPoolRef, m.String())
 
 	if m.OpCode != dhcpv4.OpcodeBootRequest {
 		logrus.Errorf("(dhcp.dhcpHandlerPerPool) not a BootRequest! IPPool: %s", ipPoolRef)
@@ -314,6 +315,9 @@ func (a *DHCPAllocator) dhcpHandlerPerPool(conn net.PacketConn, peer net.Addr, m
 		return
 	}
 
+	// Enhanced logging for outgoing packet
+	logrus.Infof("(dhcp.dhcpHandlerPerPool) OUTGOING DHCP REPLY on IPPool %s: %s", ipPoolRef, reply.String())
+
 	if _, err := conn.WriteTo(reply.ToBytes(), peer); err != nil {
 		logrus.Errorf("(dhcp.dhcpHandlerPerPool) Cannot reply to client for IPPool %s: %v", ipPoolRef, err)
 	}