pcap timestamp bugfix

src/phy/pcap_writer.rs

@@ -73,7 +73,7 @@ pub trait PcapSink {
         assert!(length <= 65535);
 
         self.write_u32(timestamp.secs() as u32); // timestamp seconds
-        self.write_u32(timestamp.millis() as u32); // timestamp microseconds
+        self.write_u32(timestamp.micros() as u32); // timestamp microseconds
         self.write_u32(length as u32); // captured length
         self.write_u32(length as u32); // original length
     }

src/time.rs

@@ -59,6 +59,12 @@ impl Instant {
         self.millis % 1000
     }
 
+    /// The fractional number of microseconds that have passed
+    /// since the beginning of time.
+    pub const fn micros(&self) -> i64 {
+        self.millis % 1000 * 1000
+    }
+
     /// The number of whole seconds that have passed since the
     /// beginning of time.
     pub const fn secs(&self) -> i64 {